Sevinne, the Chronoclasm, and Refuse // Cooperate

Prerequisites

• Sevinne, the Chronoclasm on the battlefield
• Refuse // Cooperate in the graveyard
• You have an instant or sorcery card in hand
• plus enough mana to cast the instant or sorcery from your hand available

Steps

1. Cast any instant or sorcery spell
2. Holding priority, cast Cooperate from your graveyard by paying
3. Sevinne triggers, creating a copy of Cooperate, targeting Cooperate
4. Resolve the copy of Cooperate, creating a copy of Cooperate, targeting Cooperate
5. Repeat step 4

Results

• Infinite magecraft triggers