Urza, Prince of Kroog, Metalworker, and Thousand-Year Elixir

Prerequisites

• Urza, Prince of Kroog on the battlefield
• Metalworker on the battlefield
• Thousand-Year Elixir on the battlefield
• You have at least three artifact cards in hand

Steps

1. Activate Metalworker by tapping it and revealing at least three artifact cards from your hand, adding at least six
2. Activate Urza by paying , creating a token copy of Metalworker that is a 1/1 Soldier
3. Repeat using the Metalworker token instead
4. If you have four or more artifact cards in hand, this combo nets infinite colorless mana, and you may target any artifact you control to get infinite copies of them

Results

• Infinite colorless mana
• Infinite copies of each artifact you control
• Infinite creature tokens
• Infinite ETB