Conspiracy + Felidar Guardian + Valkyrie's Call + Yahenni, Undying Partisan

WB identity

Commander legal

The 4 combo pieces

• Conspiracy
• Felidar Guardian
• Valkyrie's Call
• Yahenni, Undying Partisan

How to execute it

1. Activate Yahenni by sacrificing Felidar Guardian.
2. When Felidar Guardian dies, Valkyrie's Call triggers, returning Felidar Guardian from your graveyard to the battlefield as an Angel.
3. When Felidar Guardian enters the battlefield, it triggers, blinking Conspiracy. Choose any creature type except "Angel" as Conspiracy enters the battlefield.
4. Resolve the Yahenni ability.
5. Repeat.

What the combo produces

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