You shoot a sharp corrosive shard at a target. Make a ranged spell attack. On a hit, it deals 1d6 acid damage. At the end of the creatures next turn, it takes another 1d4 acid damage, at which point the shard dissolves. Before the end of it's next turn, the creature can take an action to remove the shard, preventing the second d4 of damage.

The damage this spell does increases to 2d6/2d4 at level 5, 3d6/3d4 at level 11, and 4d6/4d4 at level 17.