4th Edition: Mishra's Factory
: Add .
: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
: Target Assembly-Worker creature gets +1/+1 until end of turn.
The first creature land, Mishra's Factory has the ability to do some interesting combat tricks. While attacking is pretty straight forward, a blocking Mishra's Factory has the ability to tap and give itself +1/+1 after blockers have been declared.