CARNIVOROUS MUSHROOM

A mushroom you touch grows teeth and a carnivorous appetite, gaining a bite attack that deals 2d8 piercing damage and the target is grappled. At the beginning of each of the target's turns, it can attempt a Dexterity saving throw to escape. The mushroom automatically hits with its bite attack against a creature it has grappled.  

If this spell is cast on a fungoid creature, such as a funglet or vegepygmy, it can make a bite attack as a bonus action once per round.