Emrakul Returns

(An ongoing scheme remains face up until it's
abandoned.)
At the beginning of your upkeep, you get an
Experience counter. Then if you have 4 or more
Experience counters, create Emrakul, a legendary
15/15 colorless creature token with Flying,
Trample, and Annihilator 3.
Whenever an opponent loses the game, or
Emrakul enters the battlefield, abandon this
Scheme.