Elemental Familiar

Level 4+, Familiar Friend feat

You have learned to bind a measure of elemental power to your familiar, hardening it against that energy and allowing it to release the same force against nearby creatures. You gain the following benefits.

Ability Score Increase. Increase one ability score of your choice by 1, to a maximum of 20.

Elemental Energy. When you cast find familiar, choose Acid, Cold, Fire, Lightning, or Thunder damage. Your familiar is imbued with this energy until you cast find familiar again.

Elemental Resistance. Your familiar has Resistance to the chosen damage type.

Energy Pulse. As a Bonus Action, you can command your familiar to unleash a burst of elemental energy. Your familiar must be within 120 feet of you and must use its Reaction to release the pulse.

Each other creature in a 5-foot Emanation originating from your familiar makes a Dexterity saving throw. The DC equals 8 + your spellcasting ability modifier for find familiar + your Proficiency Bonus. On a failed save, a creature takes 2d4 damage of the chosen type, and if it is Medium or smaller, it has the Prone condition.

You can use Energy Pulse a number of times equal to your Proficiency Bonus, and you regain all expended uses when you finish a Long Rest.