Chickens Of Vengeance

Upon casting this spell, you summon 3d12+5 magical chickens that fall from the sky.The chickens are under your command and will serve you onto death.The chickens can breathe fire (1d8 fire damage), are wearing armor(AC:18), and have tiny spears that deal 1d4+1 piercing damage.The chickens have 4 (1d8) hit points each, and cannot be charmed or frightened except by magical means.
At Higher Levels: When you cast this spell using using a 5th level spell slot or higher, the amount of chickens increase by 1d12, the fire damage is increased by 1d8, and their hit points increase by 1d8 for each spell slot above 4th.