Wilver, Machinist

+2: First Experiment: Create a 0/2 Myr token named Dummy into play under your control.
-4: Overheat the Core: Double the mana in your mana pool.
-12: I....Am....Wilver: For the rest of the game Wilver becomes a 5/5 Armored Inventor creature with Flying and Indestructible.