Urza, Prince of Kroog, Phyrexian Triniform, and Ashnod's Altar

Prerequisites

• Urza, Prince of Kroog on the battlefield
• Phyrexian Triniform on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Urza by paying , creating a token copy of Phyrexian Triniform that is a 1/1 Soldier in addition to its other types
2. Activate Ashnod's Altar by sacrificing Phyrexian Triniform, adding
3. When Phyrexian Triniform dies, it triggers, creating three 3/3 Golem artifact creature tokens
4. Activate Ashnod's Altar twice by sacrificing two Golems, adding
5. Repeat
6. Once you have infinite mana, you may use Urza to make infinite copies of any artifacts you control

Results

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