Clown Car, Salvaging Station, Battered Golem, and Phyrexian Altar

Prerequisites

• Clown Car in the graveyard
• Salvaging Station on the battlefield
• Battered Golem on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Salvaging Station by tapping it, returning Clown Car from your graveyard to the battlefield
2. Clown Car enters the battlefield, triggering Battered Golem, untapping Battered Golem
3. Activate Clown Car's crew ability by tapping Battered Golem, causing Clown Car to become an artifact creature until end of turn
4. Activate Phyrexian Altar by sacrificing Clown Car, adding one mana of any color
5. Clown Car dies, triggering Salvaging Station, untapping Salvaging Station
6. Repeat

Results

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