Ashnod's Altar + Felidar Guardian + Angel of Indemnity

Prerequisites

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Steps

1. 1Cast Felidar Guardian by paying .
2. 2When Felidar Guardian enters the battlefield, it triggers, targeting Angel of Indemnity.
3. 3Holding priority, activate Ashnod's Altar by sacrificing Felidar Guardian, adding .
4. 4Resolve the Felidar Guardian ability, blinking Angel of Indemnity.
5. 5When Angel of Indemnity enters the battlefield, it triggers, returning Felidar Guardian from your graveyard to the battlefield.
6. 6Repeat from step 2.

Effects

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers