You transform into an amoebic form composed of highly acidic and poisonous alchemical jelly. While in this form: * you are immune to acid and poison damage and to the poisoned and stunned conditions; * you have resistance to nonmagical fire, piercing, and slashing damage; * you can’t speak, cast spells, use items or weapons, or manipulate objects; * your gear melds into your body and reappears when the spell ends; * you don't need to breathe; * your speed is 20 feet; * your size doesn’t change, but you can move through and between obstructions as if you were two size categories smaller; and * you gain the following action: **Melee Weapon Attack:** spellcasting ability modifier + proficiency bonus to hit, range 5 ft., one target; **Hit:** 4d6 acid or poison damage (your choice), and the target must make a successful Constitution saving throw or be poisoned until the start of your next turn.