Nevinyrral, Urborg Tyrant + Rooftop Storm + Cloudstone Curio

Nevinyrral, Urborg Tyrant
Rooftop Storm
Cloudstone Curio

Requires
Nevinyrral, Urborg Tyrant must be in hand, or in the command zone. Rooftop Storm must be on the battlefield. Cloudstone Curio must be on the battlefield. At least one creature has died this turn. You have enough mana to pay for commander tax, if applicable.
Steps
  1. Cast Nevinyrral either from your hand or the command zone by paying 0 plus commander tax, if applicable.
  2. Nevinyrral enters the battlefield, triggering itself and Cloudstone Curio.
  3. Resolve the Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
  4. Resolve the Nevinyrral trigger, creating a tapped 2/2 Zombie creature token for each creature that has died this turn.
  5. Each Zombie enters the battlefield, triggering Cloudstone Curio that many times.
  6. Resolve the first Cloudstone Curio trigger, returning Nevinyrral to your hand from the battlefield.
  7. Resolve each remaining Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
  8. Repeat.
Results
Infinite ETB. Infinite LTB. Infinite storm count. Infinite tapped creature tokens.

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