Voltaic Key + Rings of Brighthearth + Metalworker
Produces: Infinite colorless mana, Infinite untap of artifacts you control, Infinite mana artifacts you control can produce
- Color identity
- C
Prerequisites
2 or more artifacts in hand. Metalworker does not have summoning sickness.
Steps
- Activate Metalworker and reveal 2 artifacts to add {C}{C}{C}{C} to your mana pool.
- Activate Voltaic Key to untap Metalworker.
- Rings of Brighthearth triggers allowing you to copy Voltaic Key's ability and untap Voltaic key with the copy.
- Repeat.
How to execute this combo
The "Voltaic Key + Rings of Brighthearth + Metalworker" combo takes 4 steps in order. Make sure you have the mana open and permanents listed in the prerequisites before you start — opponents can respond between steps.
The end result: Infinite colorless mana, Infinite untap of artifacts you control, Infinite mana artifacts you control can produce.
Practice the line offline: lay out the cards, walk through each step, and note where you can lose the combo (summoning sickness, lack of priority, removal on a key permanent). In game, announce each step clearly; in casual play you can offer to shortcut after demonstrating the loop.
The best window is a turn when opponents are tapped out or after they commit a spell — hold protection (a counter, Vexing Shusher) if the combo wins on the spot.