Ike, Striking Swordsman

At the end of your combat, if creatures you
control have dealt ten or more combat damage
this turn, you may cast a creature without paying
its mana cost.
Whenever a creature enters the battlefield under
your control, you may tap or untap target
non-land permanent with converted mana cost
less than or equal to the creature's converted
mana cost.
First Strike, Trample