Prowling Geistcatcher + Karmic Guide + Ashnod's Altar

Prerequisites

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Steps

1. 1Activate Ashnod's Altar by sacrificing Karmic Guide, adding .
2. 2When Karmic Guide dies, Prowling Geistcatcher's first ability triggers, exiling Karmic Guide from your graveyard.
3. 3Activate Ashnod's Altar by sacrificing Prowling Geistcatcher, adding .
4. 4When Prowling Geistcatcher dies, its second ability triggers, returning Karmic Guide from exile to the battlefield.
5. 5When Karmic Guide enters the battlefield, it triggers, returning Prowling Geistcatcher from your graveyard to the battlefield.
6. 6Repeat.

Effects

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