Ashiok, Wicked Manipulator + Wall of Blood

Ashiok, Wicked Manipulator
Wall of Blood

Requires
All permanents 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
Near-infinitely large Wall of Blood until end of turn. Exile your library.