Conspiracy + Felidar Guardian + Phyrexian Altar + Valkyrie's Call

WB identity

Commander legal

The 4 combo pieces

• Conspiracy
• Felidar Guardian
• Phyrexian Altar
• Valkyrie's Call

How to execute it

1. Activate Phyrexian Altar by sacrificing Felidar Guardian, adding one mana of any color.
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. Repeat.

What the combo produces

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