Brotherhood Outcast + Kaya's Ghostform + Yahenni, Undying Partisan

WB identity

Commander legal

The 3 combo pieces

• Brotherhood Outcast
• Kaya's Ghostform
• Yahenni, Undying Partisan

How to execute it

1. Activate Yahenni by sacrificing Brotherhood Outcast.
2. When Brotherhood Outcast dies, Kaya's Ghostform triggers, returning Brotherhood Outcast from your graveyard to the battlefield.
3. When Brotherhood Outcast enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Brotherhood Outcast.
4. Resolve the Yahenni ability.
5. Repeat.

What the combo produces

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