Ashnod's Altar + Felidar Guardian + Karmic Guide

Prerequisites

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Steps

1. 1Cast Felidar Guardian by paying its mana cost.
2. 2When Felidar Guardian enters the battlefield, it triggers, targeting Karmic Guide
3. 3Holding priority, activate Ashnod's Altar by sacrificing Felidar Guardian.
4. 4Resolve the Felidar Guardian ability, blinking Karmic Guide
5. 5When Karmic Guide enters, 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