Soul Collector, Yahenni, Undying Partisan, and Pandemonium

Prerequisites

• Soul Collector in hand
• Yahenni, Undying Partisan on the battlefield
• Pandemonium on the battlefield
• available

Steps

1. Cast Soul Collector by paying
2. When Soul Collector enters the battlefield, Pandemonium triggers, causing Soul Collector to deal damage to itself equal to its power
3. If an ability from Yahenni is waiting to resolve, let it resolve
4. Activate Yahenni by sacrificing Soul Collector
5. When Soul Collector dies, it triggers, returning itself from your graveyard to the battlefield
6. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers