Aerosteel Blade

At the beginning of combat, look at the top card of your library, then name a card type.
Reveal the top card of your library: If it's the named type, equipped creature gets +2/+1 and Trample until end of turn, if not, that creature gets +1/+2 and Deathtouch until end of turn. Use this only once per turn.
Equip {2}