Hydro-Man, Fluid Felon [Marvel's Spider-Man]

Cost: U U Whenever you cast a blue spell, if Hydro-Man is a creature, he gets 1/ 1 until end of turn.
At the beginning of your end step, untap Hydro-Man. Until your next turn, he becomes a land and gains "T: Add U." (He's not a creature during that time.) "Well, I always wanted a waterfront view." —Spider-Man