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

Urza, Prince of Kroog

Metalworker

Thousand-Year Elixir

How it works

1. Activate Metalworker by tapping it and revealing at least three artifact cards from your hand, adding at least six C.
2. Activate Urza by paying 6, 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.

This loop relies on transforming Metalworker into an absolute engine, accelerated by Thousand-Year Elixir to bypass summoning sickness and provide the crucial untap effect needed to cycle through activations. By tapping Metalworker and revealing enough artifacts from your hand, you generate a massive surge of colorless mana that funds Urza, Prince of Kroog's expensive copying ability. Urza not only turns your mana into a fresh token copy of Metalworker, but his static anthem also pumps all your artifact creatures with +2/+2 to keep them safe, while the original Thousand-Year Elixir stands ready to untap your new mechanical workforce and repeat the surge indefinitely.