Ashiok, Wicked Manipulator + Wall of Blood

Ashiok, Wicked Manipulator
Wall of Blood

Requires
Ashiok, Wicked Manipulator must be on the battlefield. Wall of Blood must be on the battlefield.
Steps
  1. Activate Wall of Blood by exiling the top card of your library due to Ashiok, giving Wall of Blood +1/+1 until end of turn.
  2. Repeat.
Results
Exile your library. Near-infinitely large Wall of Blood until end of turn.