Recurring Nightmare, Phyrexian Altar, and Deep Forest Hermit

Prerequisites

• Recurring Nightmare on the battlefield
• Phyrexian Altar on the battlefield
• Deep Forest Hermit in the graveyard
• You control at least one creature

Steps

1. Activate Recurring Nightmare by sacrificing a creature and returning it from the battlefield to your hand, returning Deep Forest Hermit from your graveyard to the battlefield
2. When Deep Forest Hermit enters the battlefield, it triggers, creating four 1/1 Squirrel creature tokens
3. Activate Phyrexian Altar three times by sacrificing Deep Forest Hermit and two Squirrels, adding
4. Cast Recurring Nightmare by paying
5. Repeat

Results

• Infinite colored mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count