Base Class: Warlock
While many people know the legends of the primordial creatures of air, earth, fire, and water, you believe they are more than myth. You had a vision of one of these creatures and formed a pact with it.
Your primordial pact is with the Tidereaver Kraken.
Extended Spell List, Primordial Cantrip, Extra Language
Extended Spell List. The Primordial lets you choose from an expanded list of spells when you learn a warlock spell or mystic arcanum. You may choose a spell of an appropriate level from any class’s spell list as long as it deals with the element of your chosen Primordial. The spells you choose become warlock spells for you. For example, at 7th level, a warlock with a water patron could choose control water, a 4th-level spell from the cleric spell list.
Primordial Cantrip. At 1st level, the Primordial grants you an extra cantrip according to its type, as shown below. When an eldritch invocation uses or has a prerequisite for the eldritch blast cantrip, you may use your Primordial Cantrip instead. If an eldritch invocation mentions an additional effect when eldritch blast hits and your cantrip does damage when a creature fails a saving throw, the effect occurs when the creature fails a saving throw.
Extra Language Also at 1st level, the Primordial grants you the knowledge to speak, read, and write a primordial language associated with its type
Elemental Resistance
Elemental Resistance. Starting at 6th level, you gain resistance to a damage type associated with your patron
Elemental Conduit
Elemental Conduit. Starting at 10th level, when you deal damage with your Primordial Cantrip, you may roll the damage dice twice and use the larger result.
Elemental Emissary
Elemental Emissary. Starting at 14th level, the Primordial allows you to call upon an emissary of their power. You can cast conjure elemental once without using a spell slot to summon an elemental of challenge rating 5 of a type that matches your patron. You can’t do so again until you finish a long rest.