Tatsunari, Toad Rider, Gatherer of Graces, Rancor, and Phyrexian Altar

Prerequisites

• Tatsunari, Toad Rider on the battlefield
• Gatherer of Graces on the battlefield
• Rancor in hand
• Phyrexian Altar on the battlefield
• available

Steps

1. Cast Rancor by paying targeting Gatherer of Graces
2. Tatsunari triggers, creating a legendary 3/3 Keimi creature token
3. Resolve Rancor, attaching it to Gatherer of Graces
4. Activate Gatherer of Graces by sacrificing Rancor
5. Rancor triggers, returning itself from your graveyard to your hand
6. Activate Phyrexian Altar by sacrificing the Keimi token, adding
7. Repeat

Results

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