Pattern of Rebirth, Mortuary, Boonweaver Giant, and Yahenni, Undying Partisan

Prerequisites

• Pattern of Rebirth on the battlefield
• Mortuary on the battlefield
• Boonweaver Giant on the battlefield
• Yahenni, Undying Partisan on the battlefield
• Pattern of Rebirth attached to Boonweaver Giant

Steps

1. Activate Yahenni by sacrificing Boonweaver Giant
2. When Boonweaver Giant dies, Mortuary and Pattern of Rebirth trigger
3. Resolve the Mortuary trigger, putting Boonweaver Giant on the bottom of your library from your graveyard
4. Resolve the Pattern of Rebirth trigger, putting Boonweaver Giant from your library onto the battlefield
5. When Boonweaver Giant enters the battlefield, it triggers, returning Pattern of Rebirth from your graveyard to the battlefield attached to Boonweaver Giant
6. Resolve the Yahenni ability from step 1, giving it indestructible until end of turn
7. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers