Your patron is an entity who keeps a watchful eye on the course of history: not solely in the material plane, but across the multiverse. Your patron could be an entity dedicated to order, and seeks to assure that time is kept orderly and unbroken—or your patron could desire rips and anomalies in the timeline(s) in order to sew chaos in the multiverse. Beings of this sort include Aionias, Montgomery the Sapphire Mage, Primus of Mechanus, or Ygorl of Limbo.

Expanded Spell List

The Great Old One lets 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.

  At 17th level, you also gain access to time stop for your Mystic Arcanum.

Great Old One Expanded Spells

Spell Level	Spells
1st	feather fall, guiding bolt
2nd	blur, gentle repose
3rd	haste, slow
4th	divination, freedom of movement
5th	legend lore, modify memory

Quickening

Beginning at 1st level, you learn to quicken time around you. Add your Charisma modifier to your initiative rolls.

Additionally, you may use your reaction to impose disadvantage on an opportunity attack roll made against you. You regain the use of this feature after a short or long rest.

Accelerate

Beginning at 6th level, you can further hasten the flow of time. For one round, you may use an action as a bonus action or reaction, and vice versa. You may not take the Attack Action twice in a round. A reaction taken this way happens before the triggering action, potentially negating it.

You regain the use of this feature after a short or long rest.

Timelessness

Starting at 10th level, you can no longer be magically aged and any previous magical aging is undone if you will it.

Your body now ages at whatever rate you desire, though you can still die of old age.

Additionally, you cannot be affected by any magic that would alter the flow of time, such as haste, slow, or time stop unless you will it. If you are under the effect of a haste spell, you are unaffected by the wave of lethargy once the spell ends.

Not Today

Beginning at 14th level, you quicken time around you and your allies to bolster their natural recovery. As an action, you and up to 5 allies within 60 feet of you that you can see instantly gain the benefits of a short rest. Any creature affected by this ability can use their reaction to instantly expend up to 5 hit dice. This feature does not replenish spell slots from Pact Magic.

You regain the use of this feature after a long rest.