Colfenor, the Last Yew, Ashnod's Altar, Shifting Wall, and Endless One

Prerequisites

• Colfenor, the Last Yew on the battlefield
• Ashnod's Altar on the battlefield
• Shifting Wall on the battlefield
• Endless One in the graveyard
• At least one +1/+1 counter on Shifting Wall

Steps

1. Sacrifice Shifting Wall to Ashnod's Altar for
2. Colfenor triggers, returning Endless One from your graveyard to your hand
3. Cast Endless One for
4. Sacrifice Endless One to Ashnod's Altar for
5. Colfenor triggers, returning Shifting Wall from your graveyard to your hand
6. Cast Shifting Wall for
7. Repeat

Results

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