Superman, Man of Tomorrow

(Nonexistent mana costs can't be paid)
Flying, vigilance
You may cast Superman face down as a 2/2
creature for {3}. Whenever a creature would deal
damage to you or a permanent you control, you
may pay {3}{w}. If you do, turn Superman back up.
It gets +2/+2 until end of turn and fights that creature. If it wins, prevent that damage.
"It's a morph! It's a megamorph! It's... Superman!"