Impaler of Mortals

Flying, Deathtouch
Impaler of Mortals can only block creatures with power 3 or less
Intern (Whenever you may cast a spell, you may exile This card. If you do, you may pay {1} at any time to put a Time counter on it. If this card has Time counters on it equal or more than it's converted mana cost, you may cast it from exile without paying it's mana cost)