Illuminor Szeras + Gravecrawler + Thornbite Staff

Illuminor Szeras
Gravecrawler
Thornbite Staff

Requires
All permanents on the battlefield. Thornbite Staff attached to Illuminor Szeras. You control an additional Zombie. Illuminor Szeras does not have summoning sickness.
Steps
  1. Activate Illuminor Szeras by tapping it and sacrificing Gravecrawler, adding b
  2. The ability granted by Thornbite Staff triggers, untapping Illuminor Szeras
  3. Cast Gravecrawler from your graveyard by paying b
  4. Repeat
Results
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite storm count.