Umbral Mantle + Metalworker
Produces: Infinite colorless mana, Infinitely large creature until end of turn, Infinite untap of creatures you control, Infinite mana creatures you control can produce
- Umbral Mantle
- Metalworker
- Color identity
- C
Prerequisites
Umbral Mantle attached to Metalworker. Metalworker does not have summoning sickness. You have at least two artifact cards in hand.
Steps
- Activate Metalworker by tapping it, revealing at least two artifact cards from your hand and adding at least {C}{C}{C}{C}.
- Activate Metalworker by paying {3} and untapping it, giving it +2/+2 until end of turn.
- Repeat.
How to execute this combo
The "Umbral Mantle + Metalworker" combo takes 3 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, Infinitely large creature until end of turn, Infinite untap of creatures you control, Infinite mana creatures 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.