Call Lightning

LEVEL: 3rd
CASTING TIME: 1 Action
RANGE/AREA: 120 ft (60 ft)
COMPONENTS: V, S
DURATION: Concentration 10 Minutes
SCHOOL: Conjuration
ATTACK/SAVE: DEX Save
DAMAGE/EFFECT: Lightning

• A storm cloud appears in the shape of a cylinder that is 10 feet tall with a 60-foot radius, centered on a point you can see within range directly above you. The spell fails if you can't see a point in the air where the storm cloud could appear (for example, if you are in a room that can't accommodate the cloud).
• When you cast the spell, choose a point you can see under the cloud. A bolt of lightning flashes down from the cloud to that point. Each creature within 5 feet of that point must make a Dexterity saving throw. A creature takes 3d10 lightning damage on a failed save, or half as much damage on a successful one. On each of your turns until the spell ends, you can use your action to call down lightning in this way again, targeting the same point or a different one.
• If you are outdoors in stormy conditions when you cast this spell, the spell gives you control over the existing storm instead of creating a new one. Under such conditions, the spell's damage increases by 1d10.

At Higher Levels: 

• When you cast this spell using a spell slot of 4th or higher level, the damage increases by 1d10 for each slot level above 3rd.

Concentration

• Some Spells require you to maintain Concentration in order to keep their magic active. If you lose Concentration, such a spell ends.
• If a spell must be maintained with Concentration, that fact appears in its Duration entry, and the spell specifies how long you can concentrate on it. You can end Concentration at any time (no action required).
• Normal activity, such as moving and attacking, doesn’t interfere with Concentration. The following factors can break concentration:
• Casting another spell that requires Concentration. You lose Concentration on a spell if you cast another spell that requires Concentration. You can’t concentrate on two Spells at once.
• Taking damage. Whenever you take damage while you are concentrating on a spell, you must make a Constitution saving throw to maintain your Concentration. The DC equals 10 or half the damage you take, whichever number is higher. If you take damage from multiple sources, such as an arrow and a dragon’s breath, you make a separate saving throw for each source of damage.
• Being Incapacitated or killed. You lose Concentration on a spell if you are Incapacitated or if you die.
• The GM might also decide that certain environmental phenomena, such as a wave Crashing over you while you’re on a storm--tossed ship, require you to succeed on a DC 10 Constitution saving throw to maintain Concentration on a spell.

Components

• A spell's components are the physical requirements you must meet in order to cast it. Each spell's description indicates whether it requires verbal (V), or somatic (S). If you can't provide one or more of a spell's components, you are unable to cast the spell.

Verbal (V)

• Most spells require the chanting of mystic words. The words themselves aren't the source of the spell's power; rather, the particular combination of sounds, with specific pitch and resonance, sets the threads of magic in motion. Thus, a character who is gagged or in an area of silence, such as one created by the silence spell, can't cast a spell with a verbal component.

Somatic (S)

• Spellcasting gestures might include a forceful gesticulation or an intricate set of gestures. If a spell requires a somatic component, the caster must have free use of at least one hand to perform these gestures.