Greninja, Ninja Frog

Evolution: You may sacrifice a Frogadier, Bubble
Frog you control as an addition cost to cast this
spell. If you do, it costs {2}{u}{u} less to cast.
First strike, haste
Battle Bond: Whenever a creature dealt damage by Greninja this turn dies, sacrifice Greninja. Search
your library for a creature named Ash-Greninja,
Bonded and put it on the battlefield.