Elemental Domain

Practitioners of ancient elemental magic granted to them by the Elemental lords of the Elemental planes

Primordial Proficiency

You learn to speak Primordial and you have advantage to any Arcana History or Religion rolls that are related to the Elementals or their plane of origin

Elementalist

At 1st level you learn 4 additional cantrips Control flames, Gust, Mold earth and Shape water

Channel Divinity: Elemental Blast

Starting at 2nd level, you can use your Channel Divinity to wield the power of the elements sending an elemental blast of all four major elements

Elemental blast - Spell attack roll to hit- on a hit the target takes 1d6 fire + 1d6 cold + 1d6 Lightning + 1d6 Acid and all damage types ignore Immunity and treat it like resistance instead. Each damage type increases by 1d6 at 5th level, by 2d6 at 11th level and by 3d6 at 17th level to a maximum of 4d6 per damage type.

Empowered Elementalist

At 6th level, you can add your wisdom modifier to the damage of your cantrips and you gain four additional cantrips Shocking Grasp, Ray of frost, Produce Flame and Acid Splash

Adept Elementalist

At 8th level your elemental magic becomes more potent and you can add your WIS modifier to any damage you do with spells that deal elemental damage

Master Elementalist

Starting at 17th level, you imbue 4 totemic representations of the Elemental Lords that can be used in combat as a bonus action. Can only use each totem once per day.

Fire totem - 20 hp immune to psychic and poison damage - Place a totem in a 5 ft. radius around you that hurls a firebolt at an enemy when your turn ends. Lasts for 1 minute or until destroyed. Firebolt scales with player level.

Water totem - 20 hp immune to psychic and poison damage - Place a totem in a 5 ft. radius around you that heals allies in a 30ft. radius at the end of your turn for 2d4. does not have any effects on creatures that are on 0 hp. Lasts for 1 minute or until destroyed. 

Earth totem - 20 hp immune to psychic and poison damage - Place a totem in a 5 ft. radius around you that sends tremors in a 30ft. radius and slows all enemy creatures movement speed by half. Lasts for 1 minute or until destroyed. 

Air totem - 20 hp immune to psychic and poison damage - Place a totem in a 5 ft. radius around you that enhances weapon attacks of your allies that are within 15ft.  causing them to have a 15% chance on every mele attack to triger a second attack. Lasts for 1 minute or until destroyed.