Greninja,Assassin of TheDepths

Deathtouch, Islandwalk
{b}{u}{u},{t}:Counter target spell
Whenever Greninja,Assassin of TheDepths deals combat damage to a player untap it and gain control of target opponent's creature until end of turn. Untap it and it gains haste.
Smash Attack(Secret Ninja)-{10}:Destroy up to 5 target permanents. If any of those were creatures, Greninja,Assassin of TheDepths deals damage equal to their power to any targets.