Norman Osborn // Green Goblin, Hullbreaker Horror, and Birgi, God of Storytelling // Harnfel, Horn of Bounty

Prerequisites

• Norman Osborn // Green Goblin on the battlefield
• Hullbreaker Horror on the battlefield
• Birgi, God of Storytelling // Harnfel, Horn of Bounty on the battlefield

Steps

1. Activate Harnfel by discarding a nonland permanent card that costs or less
2. Cast the permanent from your graveyard for its mayhem cost by paying due to Green Goblin
3. Hullbreaker Horror trigger, returning another nonland permaennt that costs 2 or less from the battlefield to your hand
4. Resolve the spell from step 2
5. Repeat

Results

• Exile your library with the ability to play the exiled cards until end of turn
• Infinite self-discard triggers
• Infinite storm count