Frenetic Efreet, Karplusan Minotaur, and Serra's Emissary

Prerequisites

• Frenetic Efreet on the battlefield
• Karplusan Minotaur on the battlefield
• Serra's Emissary on the battlefield
• "Creature" chosen with Serra's Emissary

Steps

1. Activate Frenetic Efreet an arbitrarily large number of times by paying a total of
2. Resolve the first Frenetic Efreet ability, flipping a coin and either sacrificing Frenetic Efreet or causing it to phase out
3. If you won the flip, Karplusan Minotaur's first ability triggers, dealing 1 damage to any target
4. If you lost the flip, Karplusan Minotaur's second ability triggers, dealing 1 damage to any target of an opponent's choice
5. Serra's Emissary prevents you or a creature you control from being targeted by an opponent
6. Resolve the next Frenetic Efreet ability, flipping a coin and not sacrificing Frenetic Efreet or causing it to phase out due to it no longer being on the battlefield
7. Repeat from step 3

Results

• Infinite damage