Evolution Witness, Tarrian's Soulcleaver, and Dark Sphere

Prerequisites

• Evolution Witness on the battlefield
• Tarrian's Soulcleaver on the battlefield
• Dark Sphere on the battlefield
• Tarrian's Soulcleaver attached to Evolution Witness

Steps

1. Cast Dark Sphere by paying
2. Activate Dark Sphere by tapping and sacrificing it
3. Tarrian's Soulcleaver triggers, putting a +1/+1 counter on Evolution Witness
4. Evolution Witness triggers, returning Dark Sphere from your graveyard to your hand
5. Resolve the Dark Sphere ability
6. Repeat

Results

• Infinite storm count
• Infinite +1/+1 counters on Evolution Witness