Colfenor, the Last Yew, Ashnod's Altar, Shifting Wall, and Ugin's Conjurant

Prerequisites

• Colfenor, the Last Yew on the battlefield
• Ashnod's Altar on the battlefield
• Shifting Wall on the battlefield
• Ugin's Conjurant 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 Ugin's Conjurant from your graveyard to your hand
3. Cast Ugin's Conjurant for
4. Sacrifice Ugin's Conjurant 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