Coven Casting

Prerequisite: ability to cast a spell of 1st-level or higher

Your trust in others binds you to them, allowing your power flow through them. A number of times per long rest equal to your proficiency bonus, choose a humanoid ally that you can see and cast a spell with a casting time of one action using a spell slot; your ally may use their reaction to allow the magic to flow through them as if they had cast it, following all the other rules of spell casting. The spell DC and spell attack, if the spell requires it, are determined by your spell DC and spell attack modifier. If that spell requires concentration, the chosen ally will be the one that concentrates on the spell.