Emperor Ayrelion

Vigilance, Deathtouch, Fabricate 2
All creatures you control have Fabricate.
Whenever you Fabricate or an artifact enters the battlefield, you may search your library for a Plains, Island or Swamp. Put it on the battlefield tapped, then shuffle your library.
Whenever a creature or artifact attacks or leaves the battlefield, Fabricate {x} where {x} is equal to the lands you control.