Summoning Station, Pitiless Plunderer, and Yahenni, Undying Partisan

Prerequisites

• Summoning Station on the battlefield
• Pitiless Plunderer on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Summoning Station by tapping it, creating a 2/2 Pincher creature token
2. Activate Yahenni by sacrificing the Pincher
3. When the Pincher dies, Pitiless Plunderer triggers, creating a Treasure token
4. Resolve the Yahenni ability
5. Activate the Treasure by tapping and sacrificing it, adding one mana of any color
6. Summoning Station triggers, untapping it
7. Repeat

Results

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