Mega Gyarados

Evolution {2}{u}{u}{r} (You may cast this spell for
its evolution cost by also sacrificing a Gyarados.)
Trample, haste
Mega Gyarados can not be blocked except by
three or more creatures. Creatures that block
Mega Gyarados are returned to their owners hand
at the end of combat.
At the beginning of your upkeep, return Mega Gyarados to your hand unless you control a Gyaradosite.