Composite Golem, and Nim Deathmantle

Prerequisites

• Composite Golem on the battlefield
• Nim Deathmantle on the battlefield

Steps

1. Activate Composite Golem by sacrificing it, adding
2. Nim Deathmantle triggers
3. Composite Golem dies, triggering Nim Deathmantle, causing you to pay to return Composite Golem from your graveyard to the battlefield, and attach Nim Deathmantle to it
4. Repeat

Results

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