Darwin’s Horrid Acidic Ball

You squeeze the moisture from the sponge creating a ball of acid that hurls to a 30-foot cube centered on a point you choose within range. Each creature in that area must make a Strength saving throw. Water elementals and oozes aren’t affected, and beasts and constructs make this saving throw with disadvantage. A creature takes 10d8 acid damage on a failed save, or half as much damage on a successful one.