Summoning Station, Pitiless Plunderer, and Phyrexian Altar

Prerequisites

• Summoning Station on the battlefield
• Pitiless Plunderer on the battlefield
• Phyrexian Altar on the battlefield
• You control an artifact creature

Steps

1. Activate Summoning Station by tapping it, creating a 2/2 Pincher creature token Activate Phyrexian Altar by sacrificing the Pincher, adding one mana of any color
2. The Pincher dies, triggering Pitiless Plunderer and Summoning Station
3. Resolve the Pitiless Plunderer trigger, creating a Treasure token
4. Resolve the Summoning Station trigger, untapping it
5. Repeat

Results

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