General Iris, the Unbowed

First strike, vigilance.
Whenever another creature you control deals
combat damage to a player, exile the top card of
your library, if that card has a converted mana
cost less than that creature you may cast it
without paying it's mana cost, if you don't, you
may play that card this turn.
"Victory is reserved for those who know their
weaknesses and how to overcome them."