Chrome Dome, Ashnod's Altar, and Precursor Golem

Prerequisites

• Chrome Dome on the battlefield
• Ashnod's Altar on the battlefield
• Precursor Golem on the battlefield
• available

Steps

1. Activate Chrome Dome by paying , creating a token copy of Precursor Golem with haste
2. When Precursor Golem enters, it triggers, creating two creature tokens
3. Activate Ashnod's Altar three times by sacrificing two creature tokens, adding six
4. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite copies of artifacts you control with haste
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite sacrifice triggers