Will, Scion of Peace, Phyrexian Altar, Sedgemoor Witch, and Mystic Speculation

Prerequisites

• Will, Scion of Peace on the battlefield
• Phyrexian Altar on the battlefield
• Sedgemoor Witch on the battlefield
• Mystic Speculation in hand
• You have gained at least 2 life this turn
• Will does not have summoning sickness
• available

Steps

1. Activate Will by tapping it, reducing the cost of all white and/or blue spells you cast this turn by at least
2. Cast Mystic Speculation with buyback by paying due to Will's ability
3. Sedgemoor Witch triggers, creating a 1/1 Pest creature token
4. Resolve Mystic Speculation, causing you to scry 3 and return it to your hand
5. Activate Phyrexian Altar by sacrificing the Pest, adding
6. When the Pest dies, it triggers, causing you to gain 1 life
7. Repeat from step 2

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite scry 3
• Infinite storm count