Agatha of the Vile Cauldron, Chrome Dome, and Phyrexian Altar

Prerequisites

• Agatha of the Vile Cauldron on the battlefield
• Chrome Dome on the battlefield
• Phyrexian Altar on the battlefield
• available

Steps

1. Activate Chrome Dome by paying at most due to Agatha, creating a token copy of another artifact creature you control with haste
2. Activate Phyrexian Altar by sacrificing the artifact token, adding
3. Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite creature sacrifice triggers