Phyrexian 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 Phyrexian Altar by sacrificing Felidar Guardian, adding one mana of any color.
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 colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers