Kolodin, Triumph Caster, Salvaging Station, Clown Car, and Yahenni, Undying Partisan

Prerequisites

• Kolodin, Triumph Caster on the battlefield
• Salvaging Station on the battlefield
• Clown Car in the graveyard
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Salvaging Station by tapping it, returning Clown Car from your graveyard to the battlefield
2. When Clown Car enters, Kolodin triggers, causing Clown Car to become an artifact creature until end of turn
3. Activate Yahenni by sacrificing Clown Car
4. When Clown Car dies, Salvaging Station triggers, untapping Salvaging Station
5. Resolve the Yahenni ability
6. Repeat

Results

• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers