The Sovereign Throne

Expanded Spell List

The Sovereign Throne let you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Sovereign Throne Expanded Spells
Spell Level	Spells
1st	command, sanctuary
2nd	silence, zone of truth
3rd	clairvoyance, phantom steed
4th	divination, Leomund's secret chest
5th	dominate person, geas

Chosen Heir

Beginning at 1st level, your patron has bestowed upon you the mark of succession. Choose one of the following schools of magic: abjuration, conjuration, divination, enchantment, evocation, illusion, necromancy, transmutation. When you cast a spell of your chosen school using a warlock spell slot, you can cause each creature around you to recognize your majestic authority. Each creature within 15 feet must make a Wisdom saving throw against your warlock spell DC. The creatures that fail their saving throw are are charmed or frightened by you (your choice) until the start of your next turn.
Once you use this feature, you can't use it again until you finish a short or long rest.

Seat of Power

Starting at 1st level, your patron manifests in your mind, calling your name and bestowing you power in its image. You choose a throne, or roll a d8, on the Thrones of Power table to determine the material composition of your patron.
In addition, you learn a language corresponding to your patron found on the Thrones of Power table. Your patron communicates to you in this language.
Finally, you learn the thaumaturgy cantrip, which counts as a warlock cantrip for you, and does not count against your number of cantrips known.

Thrones of Power
d8	Throne Material	Language
1	Bestial	Sylvan
2	Bone	Infernal
3	Conventional	Any Standard
4	Elemental	Primordial
5	Light	Celestial
6	Nature	Sylvan
7	Precious Metals (Gemstones)	Draconic or Slaad (Gem)
8	Shadow	Abyssal

Predecessor's Legion

At 6th level, ancient rulers send you aid in your most trying of times. As a reaction, you can add 1d6 to your AC or saving throw result against a single attack or spell, as the spirits of former knights lend you their strength and fortitude.
Once you use this feature, you can't use it again until you finish a short or long rest.

Indomitable Presence

At 10th level, you have advantage on Charisma saving throws. If you succeed on a Charisma saving throw, you can use your reaction to cause the creature who forced you to make the saving throw to become frightened of you until the end of their next turn.

The King's Domain

At 14th level, you rise to the standard your patron expects of its chosen monarch and claim domain over one school of magic. Choose one of the following schools of magic: abjuration, conjuration, divination, enchantment, evocation, illusion, necromancy, or transmutation.
You can expend a warlock spell slot to cast any 5th level spell or lower from the chosen school of magic. The spell can be from any spell list, and counts as a warlock spell while you are casting it. Once you cast a spell using this feature, you can't do so again until you finish a long rest.
Additionally, you can crush the magic of lesser spellcasters. You can cast dispel magic as a 5th-level spell at will without expending a spell slot, provided that you are targeting an effect created by a spell of your chosen school of magic. If you try to cast dispel magic on an invalid effect, your spell fails. If the targeted spell is of 6th-level or higher, you have advantage on your ability check to end the spell.

Creating a Throne

You can talk with your DM to create your own throne, with its own language, if the current list doesn't have a specific throne you wish to utilize.
The conventional throne might resemble an extravagant wooden, iron, or stone seat, unique in its own way, while the bestial throne may consist of hundreds of ravens, snakes, spiders, or any other tiny beasties. The elemental throne can take form of any element, while the precious metals throne has just as much freedom.
You can choose more than one throne material, but only choose one as the primary material. You can gain only one language from your throne with the Seat of Power feature.
Additionally, any material you create when summoning your throne, via Invocations, can't be used as material components. Trading or gifting pieces of this material renders it valueless. Upon your death, any materials created this way erodes and scatters away.
Roleplaying A Thronelock Your patron could be a family throne, sentient with the spirits of former rulers, and overthrown by usurpers. Perhaps your patron is a prophetic empty throne that each child must sit upon to determine the next king; no reaction until you came along.
Maybe your patron has a fiend sitting upon it and has tasked you to replace it. Or your patron could be cursed and locked away in a demi-plane. It has tasked many to free it, and he who does becomes king of an entire world.

Traits of the Sovereign Throne

Those who make their pact with the Sovereign Throne rise to the stature of a leader. The Throne slowly and carefully cultivates the sapling that you are to become a champion among mortals. When you first make your pact, or over time as you become more of a ruler, you may select a trait, or roll a d10, on the Sovereign Throne Traits table.

Sovereign Throne Traits
d10	Traits
1	You draw everyone's attention when you stand up or raise your hand.
2	Your shadow always appears to adorn a crown of some sort even if you aren't wearing one.
3	You tend to disregard authority and establish yours.
4	You inspire both awe and fear in the eyes of the commonwealth.
5	No matter how stressed or relaxed you are, whenever you are sitting, you embody authority.
6	When you sit in any seat that isn't your throne, you constantly fidget.
7	Your voice can be heard over the largest of crowds.
8	While waiting, you begin to rap your fingers, or fidget with a coin or a ring.
9	Your footsteps rumble heavily and echo in the confines of a building.
10	You tend to act as if your presence is a gift, and that doing the bidding of others is the act of charity.