Ashnod's Altar + Fiend Hunter + Karmic Guide

Prerequisites

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Steps

1. 1Cast Fiend Hunter by paying its mana cost.
2. 2When Fiend Hunter enters, its first ability triggers, exiling Karmic Guide.
3. 3Activate Ashnod's Altar by sacrificing Fiend Hunter.
4. 4When Fiend Hunter dies, its second ability triggers, returning Karmic Guide from exile to the battlefield.
5. 5When Karmic Guide enters, it triggers, returning Fiend Hunter from your graveyard to the battlefield.
6. 6When Fiend Hunter enters, its first ability triggers, exiling Karmic Guide.
7. 7Repeat from step 3.

Effects

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