Necrogen Communion + Sun Titan + Yahenni, Undying Partisan

WB identity

Commander legal

The 3 combo pieces

• Necrogen Communion
• Sun Titan
• Yahenni, Undying Partisan

How to execute it

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

What the combo produces

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