Boonweaver Giant + Necrogen Communion + Yahenni, Undying Partisan

WB identity

Commander legal

The 3 combo pieces

• Boonweaver Giant
• Necrogen Communion
• Yahenni, Undying Partisan

How to execute it

1. Activate Yahenni by sacrificing Boonweaver Giant
2. When Boonweaver Giant dies, Necrogen Communion triggers, returning Boonweaver Giant from your graveyard to the battlefield
3. When Boonweaver Giant enters, it triggers, returning Necrogen Communion from your graveyard to the battlefield attached to Boonweaver Giant.
4. Resolve the Yahenni ability from step 1.
5. Repeat.

What the combo produces

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