Prerequisites
- Urza, Prince of Kroog on the battlefield
- Metalworker on the battlefield
- Retreat to Coralhelm on the battlefield
- Razortide Bridge on the battlefield
- You have at least three artifact cards in hand
- Metalworker does not have summoning sickness
Steps
- Activate Metalworker by tapping it and revealing at least three artifact cards from your hand, adding at least six
- Activate Urza by paying , creating a token copy of Razortide Bridge that is a 1/1 Soldier
- When the Razortide Bridge token enters the battlefield, Retreat to Coralhelm triggers, untapping Metalworker
- Repeat
- 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
- Infinite landfall triggers
Required Cards 4
Urza, Prince of Kroog
Legendary Creature — Human Artificer
Metalworker
Artifact Creature — Construct
Retreat to Coralhelm
Enchantment
Razortide Bridge
Artifact Land