Because 5e has no mechanical incentive to keep familiars alive I made it a running joke to repeatedly kill my familiar with my AOE spells. It dies every combat session and normally to my own fireballs or lightning bolts. My familiar hates my wizard but is contractually obligated (magically bound) to obey my orders. When it glares at me I'll yell "you don't have a union!" made the GM laugh and the Ranger gasp the first time lol
But I think the GM is making a familiar union will my owl familiar as the founder.