Spellcasting in the Skies

Every living creature in the Fractured Skies has an Elemental Attunement, which grants them certain abilities and effects their development. One major way this manifests is in the nature of magic, which works slightly differently than in other D&D worlds.
Spellcasters in this world cast spells by shaping magical energy drawn from their connection to their element (represented mechanically by spell slots or spell points). This means that they can only cast spells that correspond to that element. Additionally, spells in the Skies are not restricted by a class list. Any class with spellcasting can learn any spell, so long as they have the proper spell slot, they can learn spells of the available levels.
The best way to think about this is like "Bending" from Avatar: The Last Airbender. Just as the benders controlled their elements, and each style of bending was unique, spellcasters in the Skies are tied to and master their native element.
For example, under normal circumstances, only a fire attuned individual could cast the third-level spell "Fireball". Returning to the ATLA example, it would be weird if a water bender like Katara started shooting flames like a fire bender.
But don't despair if your favourite spell doesn't match with your chosen element, because the clever spellcasters of the world have developed different ways to get around this limitation (So yes, you can play that Water Genasi wizard who casts Fireball every 3 minutes!). The most readily available tool they use to do this are Elemental Foci, which expand the elements a spellcaster can use. For more information, see the dedicated page for this item.
Another option available only to sorcerers is the "Transmuted Spell" metamagic option found in Tasha's Cauldron of Everything. With this feature, sorcerers are able to cast any spell that the option normally effects, so long they choose a damage type that aligns with their Elemental Attunement (at the shared discretion of the player and the DM).
A third option is to use magic stored in items or spell scrolls. Magic cast in this way draws its power from the imbued magic of the item, and does not rely on the caster's element.
Another exception comes with subclasses that have pre-built spells worked into features, such as domain spells. Some of these spells will not line up with your chosen element. In this case, treat them as mechanically identical to the original spell, but flavour the effect in such a way as to make it line up with your chosen element. If the contradiction between your element and your spells effect is too great, consult with your DM. They may allow you to trade the spell in for one that better fits with your character, or elsewise, allow your spell to function a little differently (fireball that does cold damage anyone?).
Additionally, as ever, warlocks interact with magic differently than other spellcasting classes. For more information on how this works see the Flavoring Player Classes to the Skies article.

Spell Scrolls:

Unlike in other dungeons and dragons universes, spell scrolls are not limited to those who share a class with the spell housed in the scroll. In the Fractured Skies, spell scrolls are imbued with magic all there own by the original caster. Anyone can attempt to use a scroll, regardless of class; following the normal rules for casters without an equivalent spell level. However, if they lack a spellcasting modifier, they instead use their Intelligence score (without profiency). 

Spell List:

Cantrips:

• Arcane Bolt (Air, Earth).
• Acid Splash (Earth, Water)
• Blade Ward (Water).
• Booming Blade (Air, Nul).
• Chill Touch (Nul).
• Control Flames (Fire).
• Create Bonfire (Fire).
• Dancing Lights (Fire).
• Druidcraft (Air, Earth, Water).
• Ebb and Flow (Water).
• Eldritch Blast (Air, Nul).
• Encode Thoughts (Air, Fire, Nul).
• Fire Bolt (Fire).
• Friends (Earth, Nul).
• Frostbite (Air, Water).
• Gale Ward (Air).
• Green-Flame Blade (Fire).
• Guidance (Air, Earth, Fire, Water).
• Gust (Air).
• Infestation (Earth, Water, Nul).
• Light (Fire).
• Lighting Lure (Air, Fire).
• Mage Hand (Air, Earth).
• Magic Stone (Earth).
• Mending (Earth).
• Message (Air).
• Mind Sliver (Nul).
• Minor Illusion (Air, Nul, Water).
• Mold Earth (Earth).
• Poison Spray (Earth, Water).
• Prestidigitation (Air, Earth, Fire, Nul, Water).
• Primal Savagery (Earth, Fire, Water).
• Produce Fame (Fire).
• Ray of Frost (Water).
• Resistance (Earth).
• Sacred Flame (Fire).
• Sapping Sound (Nul).
• Shape Water (Water).
• Shillelagh (Earth, Fire, Water).
• Shocking Grasp (Air, Fire).
• Spare the Dying (Fire, Nul, Water).
• Sword Burst (Air, Earth, Fire).
• Thaumaturgy (Air, Earth).
• Thorn Whip (Earth, Water).
• Thunderclap (Air, Earth).
• Toll the Dead (Nul).
• True Strike (Air, Earth, Fire, Nul, Water).
• Vicious Mockery (Air, Nul).
• Water Ward (Water).
• Word of Radiance (Air, Earth, Fire, Water).

Level 1:

• Absorb Elements (Nul).
• Alarm (Earth).
• Animal Friendship (Air, Earth, Water)
• Armour of Agathys (Water).
• Arms of Hadar (Nul, Water).
• Bane (Nul).
• Beast Bond (Air, Earth, Water).
• Bless (Air, Earth, Fire, Water).
• Burning Hands (Fire).
• Catapult (Earth).
• Cause Fear (Nul).
• Ceremony (Air, Earth, Fire, Water).
• Chaos Bolt (Air, Earth, Fire, Water).
• Charm Person (Nul).
• Chromatic Orbs (Air, Earth, Fire, Water).
• Colour Spray (Water).
• Command (Nul).
• Compelled Duel (Fire, Nul).
• Comprehend Language (Air).
• Create or Destroy Water (Water).
• Cure Wounds (Earth, Water).
• Detect Evil and Good (Air, Earth, Fire, Nul, Water).
• Detect Magic (Air, Earth, Fire, Nul, Water).
• Detect Poison and Disease (Earth, Water).
• Disguise Self (Air).
• Dissonant Whispers (Air, Nul).
• Distort Value (Earth).
• Devine Favor (Air, Earth, Fire, Water).
• Earth Tremor (Earth).
• Ensnaring Strike (Earth).
• Entangle (Earth, Nul, Water).
• Expeditious Retreat (Air, Earth).
• Faerie Fire (Fire).
• False Life (Nul, Water).
• Feather Fall (Air, Fire).
• Find Familiar (Air, Earth, Fire, Nul, Water).
• Floating Disk (Earth).
• Fog Cloud (Air, Earth, Fire, Water).
• Frost Fingers (Nul, Water).
• Gift of Alacrity (Air).
• Goodberry (Earth, Water).
• Grease (Earth, Water).
• Guiding Bolt (Fire).
• Hail of Thorns (Earth, Water).
• Healing Word (Air, Earth, Fire, Water).
• Hellish Rebuke (Fire).
• Heroism (Fire).
• Hex (Nul).
• Hideous Laughter (Nul).
• Hunter's Mark (Air, Earth).
• Ice Knife (Water).
• Identify (Air, Fire).
• Illusory Script (Air).
• Inflict Wounds (Nul).
• Jim's Magic Missile (Air, Fire, Nul).
• Jump (Air, Fire).
• Longstrider (Air, Earth).
• Mage Armour (Water).
• Magic Missile (Air, Fire).
• Magnify Gravity (Earth).
• Protection from Evil and Good (Air, Earth, Fire, Nul, Water).
• Purify Food and Drink (Earth, Water).
• Ray of Sickness (Nul, Water).
• Sanctuary (Air, Earth, Fire, Water).
• Searing Smite (Fire).
• Silvery Barbs (Nul).
• Sefects Hidden Escape (Air).
• Shield (Water).
• Shield of Faith (Air, Earth, Fire, Water).
• Silent Image (Air, Water).
• Sleep (Nul).
• Snare (Earth).
• Speak with Animals (Air, Earth, Water).
• Tasha's Hideous Laughter (Air).
• Tenser's Floating Disk (Earth).
• Thunderous Smite (Air, Earth).
• Unseen Servant (Air).
• Witch Bolt (Air, Fire, Nul).
• Wrathful Smite (Nul).
• Zephyr Strike (Air).

Level 2:

• Acid Arrow (Earth, Water).
• Aganazzar's Scorcher (Fire).
• Aid (Air, Earth, Fire, Water).
• Alter Self (Earth, Water).
• Animal Messenger (Air, Earth, Water).
• Arcane Lock (Earth).
• Arcanist's Magic Aura (Air, Nul).
• Augury (Air, Earth, Fire, Water).
• Barkskin (Earth).
• Beast Sense (Air, Earth, Water).
• Blindness/Deafness (Nul).
• Blur (Fire, Water).
• Borrowed Knowledge (Air, Earth, Fire, Nul, Water).
• Branding Smite (Fire).
• Calm Emotions (Air, Earth, Water).
• Cloud of Daggers (Earth).
• Continual Flame (Fire).
• Cordon of Arrows (Earth).
• Crown of Madness (Nul).
• Darkness (Nul).
• Darkvision (Fire, Nul).
• Detect Thoughts (Nul).
• Dragon's Breath (Air, Earth, Fire, Water).
• Dust Devil (Earth).
• Earthbind (Earth).
• Enhance Ability (Earth, Fire).
• Enthrall (Nul).
• Find Steed (Air, Earth, Fire, Nul, Water).
• Find Traps (Earth).
• Flame Blade (Fire).
• Flaming Sphere (Fire).
• Flock of Familiars (Air, Earth, Fire, Nul, Water).
• Fortune's Favour (Nul).
• Gentle Repose (Nul).
• Gift of Gab (Nul).
• Gust of Wind (Air).
• Healing Spirit (Air, Fire, Water).
• Heat Metal (Fire).
• Hold Person (Earth, Nul).
• Immovable Object (Earth).
• Invisibility (Air, Water).
• Jim's Glowing Coin (Fire).
• Kinetic Jaunt (Air).
• Knock (Earth).
• Lesser Restoration (Air, Earth, Fire, Water).
• Levitate (Air, Earth).
• Locate Animals or Plants (Earth, Water).
• Locate Object (Earth).
• Magic Mouth (Earth).
• Magic Weapon (Earth).
• Maximilian's Earthen Grasp (Earth).
• Melf's Acid Arrow (Earth, Water).
• Mind Spike (Nul).
• Mirror Image (Air, Water).
• Misty Step (Air).
• Moonbeam (Fire).
• Nathair's Mischief (Air, Nul).
• Nystul's Magic Aura (Water).
• Pass Without Trace (Air, Water).
• Phantasmal Force (Air, Nul).
• Prayer of Healing (Air, Earth, Fire, Water).
• Prefects Flaming Arcane Bow (Fire).
• Protection from Poison (Earth, Water).
• Pyrotechnics (Fire).
• Ray of Enfeeblement (Nul).
• Rime's Binding Ice (Water).
• Rope Trick (Air).
• Scorching Ray (Fire).
• See Invisibility (Air, Fire).
• Shadow Blade (Nul).
• Shatter (Earth).
• Silence (Nul).
• Skywrite (Air, Water).
• Snilloc's Snowball Swarm (Water).
• Summon Aspect (Air, Earth, Fire, Nul, Water).
• Spider Climb (Earth).
• Spike Growth (Earth).
• Spiritual Weapon (Air, Earth, Fire, Nul, Water).
• Suggestion (Air, Nul).
• Summon Beast (Air, Earth, Water).
• Tasha's Mind Whip (Nul).
• Vortex Warp (Nul).
• Warding Bond (Earth, Water).
• Warding Wind (Air).
• Web (Earth, Water).
• Wither and Bloom (Nul).
• Wristpocket (Air).
• Zone of Truth (Air, Earth, Fire, Water).

Level 3:

• Absorb Ability (Nul).
• Animate Dead (Nul).
• Ashardalon's Stride (Fire).
• Aura of Vitality (Air, Earth, Fire, Water).
• Beacon of Hope (Air, Earth, Fire, Water).
• Bestow Curse (Nul).
• Blinding Smite (Fire).
• Blink (Nul).
• Call Lightning (Air, Fire).
• Catnip (Earth, Water).
• Clairvoyance (Air, Water).
• Conjure Animals (Air, Earth, Water).
• Conjure Barrage (Air, Earth).
• Counterspell (Water).
• Create Food and Water (Earth, Water).
• Crusader's Mantle (Air, Earth, Fire, Water).
• Daylight (Fire).
• Dispel Magic (Air, Earth, Fire, Nul, Water).
• Elemental Weapon (Air, Earth, Fire, Water).
• Enemies Abound (Nul).
• Erupting Earth (Earth).
• Fast Friends (Nul).
• Fear (Nul).
• Feign Death (Nul).
• Fireball (Fire).
• Flame Arrows (Fire).
• Fly (Air, Fire).
• Glader's Tower (Earth).
• Gaseous Form (Air).
• Glyph of Warding (Air, Earth, Fire, Water).
• Haste (Air, Earth).
• Hunger of Hadar (Nul, Water).
• Hypnotic Pattern (Air).
• Incite Greed (Fire, Nul).
• Intellect Fortress (Water).
• Leomund's Tiny Hut (Air, Earth, Water).
• Life Transference (Earth, Nul).
• Lighting Arrow (Air, Fire).
• Magic Circle (Air, Earth, Fire, Water).
• Major Image (Air, Water).
• Mass Healing Word (Air, Fire, Water).
• Meld into Stone (Earth).
• Melf's Minature Meteor (Earth, Fire).
• Motivational Speech (Fire).
• Nondetection (Air, Nul, Water).
• Phantom Steed (Nul).
• Plant Growth (Earth, Water).
• Protection from Energy (Nul).
• Pulse Wave (Air, Water).
• Remove Curse (Air, Earth, Fire, Water).
• Revivify (Air, Earth, Fire, Nul, Water).
• Seething Storm (Air).
• Sending (Air).
• Sleet Storm (Water).
• Slow (Earth).
• Speak with Dead (Nul).
• Speak with Plants (Earth, Water).
• Spirit Guardians (Air, Earth, Fire, Nul, Water).
• Spirit Shroud (Air, Earth, Fire, Nul, Water).
• Stinking Cloud (Air, Earth, Fire).
• Summon Fey (Air).
• Summon Lesser Demon (Fire).
• Summon Shadowspirit (Nul).
• Summon Undead (Nul).
• Sunstone (Fire).
• Thunder Step (Air).
• Tidal Wave (Water).
• Tiny Hut (Air, Earth, Water).
• Tiny Servant (Earth).
• Tongues (Air).
• Vampiric Touch (Nul).
• Wall of Sand (Earth).
• Wall of Water (Water).
• Water Breathing (Air, Water).
• Water Walk (Water).
• Wind Wall (Air).

Level 4:

• Arcane Eye (Air, Fire).
• Aura of Life (Earth, Fire, Water).
• Aura of Purity (Fire, Water).
• Banishment (Air, Nul, Water).
• Black Tentacles (Nul, Water).
• Blight (Nul).
• Charm Monster (Nul).
• Compulsion (Nul).
• Confusion (Water).
• Conjure Minor Elemental (Air, Earth, Fire, Water).
• Conjure Woodland Beast (Air, Earth, Water).
• Control Water (Water).
• Death Ward (Nul).
• Dimension Door (Air, Fire, Nul).
• Divination (Air, Fire, Water).
• Dominate Beast (Air, Earth, Water).
• Elemental Bane (Air, Earth, Fire, Water).
• Eldritch Whispers (Nul).
• Evard's Black Tentacle (Nul, Water).
• Fabricate (Earth, Fire).
• Faithful Hound (Air).
• Find Greater Steed (Air, Earth, Fire, Nul, Water).
• Fire Shield (Fire).
• Freedom of Movement (Air, Earth).
• Galder's Speed Courier (Air).
• Giant Insect (Earth).
• Grasping Vine (Earth, Water).
• Gravity Sinkhole (Earth).
• Greater Invisibility (Air).
• Guardian of Faith (Air, Earth, Fire, Water).
• Guardian of Nature (Earth, Water).
• Hallucinatory Terrain (Air).
• Ice Storm (Air, Water).
• Leomund's Secret Chest (Air, Earth).
• Locate Creature (Earth).
• Mantle of Death (Nul).
• Mordenkainen's Faithful Hound (Air).
• Mordenkainen's Private Sanctum (Air, Earth).
• Otiluke's Resilient Sphere (Earth, Nul).
• Phantasmal Killer (Air, Nul).
• Polymorph (Earth, Water).
• Private Sanctum (Air, Earth).
• Raulothim's Psychic Lance (Nul).
• Resilient Sphere (Air, Earth, Fire, Nul).
• Secret Chest (Air, Earth).
• Shadow of Moil (Nul).
• Sickening Radiance (Fire, Nul).
• Staggering Smite (Water).
• Stone Shape (Earth).
• Stoneskin (Earth).
• Storm Sphere (Air).
• Summon Aberration (Nul, Water).
• Summon Construct (Earth).
• Summon Elemental (Air, Earth, Fire, Water).
• Summon Greater Demon (Fire).
• Vitriolic Sphere (Fire, Earth, Water).
• Wall of Fire (Fire).
• Watery Sphere (Water).

Level 5:

• Animate Objects (Nul).
• Antilife Shell (Nul).
• Arcane Hand (Air, Earth).
• Awaken (Earth, Water).
• Banishing Light (Air, Earth, Fire, Nul, Water).
• Bigby's Hand (Air, Earth).
• Circle of Power (Air, Earth, Fire, Water).
• Cloudkill (Air, Water).
• Commune (Air, Earth, Fire, Nul, Water).
• Commune with Nature (Air, Earth, Fire, Water).
• Cone of Cold (Water).
• Conjure Elemental (Air, Earth, Fire, Water).
• Conjure Volley (Air, Earth, Fire).
• Contact Other Plane (Air, Earth, Fire, Water).
• Contagion (Fire, Water).
• Control Winds (Air).
• Creation (Fire).
• Dense Macabre (Nul).
• Dawn (Fire).
• Destructive Wave (Earth).
• Dispel Evil and Good (Air, Earth, Fire, Nul, Water).
• Dominate Person (Nul).
• Dream (Air).
• Enervation (Nul).
• Far Step (Air).
• Flame Strike (Fire).
• Geas (Nul).
• Greater Restoration (Air, Earth, Fire, Water).
• Hallow (Air, Earth, Fire, Water).
• Hold Monster (Earth).
• Holy Weapon (Air, Earth, Fire, Water).
• Immolation (Fire).
• Infernal Calling (Fire).
• Insect Plague (Earth, Water).
• Legend Lore (Air, Earth, Fire, Water).
• Mealsrom (Water).
• Mass Cure Wounds (Air, Earth, Fire, Water).
• Mislead (Air).
• Modify Memory (Nul).
• Negative Energy Flood (Nul).
• Passwall (Earth).
• Planar Binding (Air, Earth, Fire, Water).
• Raise Dead (Nul).
• Rary's Telepathic Bond (Air).
• Reincarnate (Air, Earth, Fire, Water).
• Scrying (Air, Fire, Water).
• Seeming (Air).
• Skill Empowerment (Earth, Fire).
• Steal Wind Strike (Air).
• Summon Celestial (Air).
• Summon Draconic Spirit (Air, Earth, Fire, Nul, Water).
• Swift Quiver (Air).
• Synaptic Static (Nul).
• Telekinesis (Air, Earth).
• Telepathic Bond (Air).
• Teleportation Circle (Air, Earth, Fire, Nul, Water).
• Temporal Shunt (Fire).
• Transmute Rock (Earth).
• Tree Stride (Earth, Water).
• Wall of Force (Air, Earth).
• Wall of Light (Fire).
• Wall of Stone (Earth).
• Wrath of Nature (Air, Earth, Fire, Water).

Level 6:

• Arcane Gate (Air, Nul).
• Blade Barrier (Air, Earth).
• Bones of the Earth (Earth).
• Chain Lightning (Air, Fire).
• Circle of Death (Nul).
• Conjure Fey (Air).
• Contingency (Air, Earth, Fire, Nul, Water).
• Create Homunculus (Earth).
• Create Undead (Nul).
• Disintegrate (Nul).
• Drawmij's Instant Summons (Air).
• Druid Grove (Earth, Water).
• Eyebite (Water).
• Find the Path (Earth).
• Flesh to Stone (Stone).
• Forbiddance (Air, Earth, Fire, Water).
• Freezing Sphere (Water).
• Globe of Invulnerability (Nul).
• Gravity Fissure (Earth).
• Guards and Wards (Earth).
• Harm (Fire, Nul).
• Heal (Air, Earth, Fire, Water).
• Hero's Feast (Earth, Water).
• Instant Summons (Air).
• Investiture of Flame (Fire).
• Investiture of Ice (Water).
• Investiture of Stone (Stone).
• Investiture of Wind (Air).
• Magic Jar (Nul).
• Mass Suggestion (Nul).
• Mental Prison (Nul).
• Move Earth (Earth).
• Otiluke's Freezing Sphere (Water).
• Otto's Irresistible Dance (Nul).
• Planar Ally (Water).
• Primordial Ward (Air, Earth, Fire, Water).
• Programmed Illusion (Air, Water).
• Scatter (Air).
• Soul Cage (Nul).
• Summon Fiend (Fire).
• Sunbeam (Fire).
• Tasha's Otherworldly Guise (Air, Water).
• Tensers Transformation (Earth).
• Transport via Plants (Earth, Water).
• True Seeing (Fire).
• Wall of Ice (Water).
• Wall of Thorns (Earth, Water).
• Wind Walk (Air).
• Word of Recall (Nul).

Level 7:

• Conjure Celestial (Air).
• Create Magen (Water).
• Crown of Stars (Fire).
• Delayed Blast Fireball (Fire).
• Divine Word (Air, Earth, Fire, Water).
• Draconic Transformation (Air, Earth, Fire, Nul, Water).
• Dream of the Blue Veil (Air, Earth, Fire Water).
• Etherealness (Air, Nul).
• Finger of Death (Nul).
• Fire Storm (Fire).
• Fizban's Platinum Shield (Earth, Fire).
• Forcecage (Air).
• Magnificent Mansion (Fire).
• Mirage Arcane (Air, Water).
• Mordenkainen's Sword (Air, Earth).
• Mordenkainen's Magnificent Mansion (Fire).
• Plane Shift (Air, Earth, Fire, Nul, Water).
• Power Word Pain (Air, Earth, Fire, Nul, Water).
• Prismatic Spray (Water).
• Project Image (Air, Water).
• Regeneration (Earth, Fire, Water).
• Resurrection (Nul).
• Reverse Gravity (Earth).
• Sequester (Air).
• Simulacrum (Earth, Water).
• Symbol (Nul).
• Teleport (Air, Nul).
• Temple of the Gods (Air, Earth, Fire, Water).
• Tether Essence (Nul).
• Whirlwind (Air).

Level 8:

• Abi-Dalzim's Horrid Wilting (Nul).
• Animal Shapes (Earth, Water).
• Antimagic Field (Nul, Water).
• Anipathy/Sympathy (Nul).
• Clone (Earth, Water).
• Control Weather (Air, Water).
• Dark Star (Nul).
• Demiplane (Earth).
• Dominate Monster (Nul).
• Earthquake (Earth).
• Feeblemind (Nul).
• Glibness (Fire).
• Holy Aura (Air, Earth, Fire, Water).
• Illusory Dragon (Air).
• Incendiary Cloud (Air, Fire).
• Maddening Darkness (Nul).
• Maze (Earth).
• Mighty Fortress (Earth).
• Mind Blank (Nul, Water).
• Power Word Stun (Air, Earth).
• Reality Break (Nul).
• Sunburst (Fire).
• Telepathy (Air).
• Tsunami (Water).

Level 9:

• Astral Projection (Air, Nul).
• Aura of Devastation (Fire).
• Blade of Disaster (Earth, Nul).
• Foresight (Air).
• Gate (Air, Earth, Fire, Nul, Water).
• Imprisonment (Earth, Water).
• Invulnerability (Air, Earth, Fire, Nul, Water).
• Mass Heal (Earth, Water).
• Mass Polymorph (Earth, Water).
• Meteor Swarm (Earth, Fire).
• Power Word Heal (Air).
• Power Word Kill (Air, Nul).
• Prismatic Wall (Fire).
• Psychic Scream (Air).
• Ravenous Void (Nul).
• Shapechange (Earth, Water).
• Storm of Vengeance (Air, Water).
• Time Stop (Fire, Earth).
• True Polymorph (Earth, Water).
• True Resurrection (Nul).
• Weird (Nul).
• Wish (Air, Earth, Fire, Nul, Water).