Hapatra, Vizier of Poisons + Blowfly Infestation

Hapatra, Vizier of Poisons
Blowfly Infestation

Requires
Hapatra, Vizier of Poisons must be on the battlefield. Blowfly Infestation must be on the battlefield. You control at least two other creatures with toughness equal to one. You have a way to put a -1/-1 counter on a creature.
Steps
  1. Put a -1/-1 counter on any creature you control with toughness equal to one.
  2. The creatue dies as a state-based action due to having zero toughness.
  3. Hapatra and Blowfly Infestation trigger.
  4. Resolve the Hapatra trigger, creating a 1/1 Snake creature token.
  5. Resolve the Blowfly Infestation trigger, putting a -1/-1 counter on any creature you control with toughness equal to one.
  6. Repeat from step 2.
Results
Infinite death triggers. Infinite ETB. Infinite LTB.