Dualcaster Mage + Yahenni, Undying Partisan + Pain 101

Prerequisites

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Steps

1. 1Cast Pain 101 by paying its mana cost.
2. 2Holding priority, cast Dualcaster Mage by paying its mana cost.
3. 3When Dualcaster Mage enters, it triggers, copying Pain 101, with the copy targeting Dualcaster Mage.
4. 4Resolve the copy of Pain 101.
5. 5Holding priority, activate Yahenni by sacrificing Dualcaster Mage.
6. 6When Dualcaster Mage dies, it triggers, returning it from your graveyard to the battlefield.
7. 7Repeat from step 3.
8. 8Resolve all Yahenni abilities from step 5.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers