Rowan, Scion of War, Phyrexian Altar, Sedgemoor Witch, and Seething Anger

Prerequisites

• Rowan, Scion of War on the battlefield
• Phyrexian Altar on the battlefield
• Sedgemoor Witch on the battlefield
• Seething Anger in hand
• You have lost at least 3 life this turn
• Rowan does not have summoning sickness
• available

Steps

1. Activate Rowan by tapping it, reducing the cost of all black and/or red spells you cast this turn by at least
2. Cast Seething Anger with buyback by paying due to Rowan's ability, targeting any creature
3. Sedgemoor Witch triggers, creating a 1/1 Pest creature token
4. Resolve Seething Anger, giving target creature +3/+0 until end of turn and returning Seething Anger 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
• Infinitely powerful creatures until end of turn
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite storm count