Cauldron Bubble

2nd-level transmutation   Casting Time: 1 action   Range: 30 feet   Components: V S M (A wooden spoon)   Duration: Concentration, Up to 1 hour   Classes: Bard, Druid, Warlock, Wizard   You make a 20-foot cube of any liquid you can see instantly boil. If a creature is submerged in the liquid, it takes 2d6 fire damage at the start of its turn as long as it’s submerged. If the creature leaves the boiling liquid, it takes 2d6 fire damage for an additional turn as the liquid on its skin or clothing cools down.   At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the size of the cube increases by 10 feet for each slot level above 2nd.