Soul Collector, Phyrexian Altar, and Pandemonium

Prerequisites

• Soul Collector in hand
• Phyrexian Altar 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. Activate Phyrexian Altar by sacrificing Soul Collector, adding one mana of any color
4. When Soul Collector dies, it triggers, returning itself from your graveyard to the battlefield
5. Resolve the ability from step 3
6. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers