You hurl a bubble of acid.
In the cradle of your palm, a noxious yellow bubble begins its genesis, starting as petite as a pea and swelling to a size more reminiscent of a pumpkin. Within its confines, a greenish liquid sloshes, occupying the bottom third of the growing orb. With a single arcane utterance, a puff of breath escapes your lips, propelling the burgeoning sphere toward its intended target.