Crab Gluing/Crab Slapping

you can only cast this "spell" when you are holding/wielding a crab. you can attach it to the enemy where the enemy has to roll a dc 16 dex save and take 1d6 of bludgeoning damage on a successful save and on a fail every round they take 1d4 x the amount of crabs you slapped on them of slashing damage. (the enemy can remove this spell if they have assess to speak with animals)