Doubling Cube + Capsize
Produces: Infinite artifact ETB, Infinite artifact LTB, Infinite storm count, Infinite blue mana, Infinite magecraft triggers, Infinite mana permanents you control can produce, Return any number of permanents to their owner's hand during each of your turns, Lock, Mass Land Denial
- Doubling Cube
- Capsize
- Color identity
- U
- Mana
- {15}{U}{U}
Steps
- Float at least {15}{U}{U}.
- Cast Doubling Cube by paying {2}.
- Activate Doubling Cube by paying {3} and tapping it, doubling the amount of mana in your mana pool. This will result in you adding at least {10}{U}{U}.
- Cast Capsize with buyback by paying {4}{U}{U}, returning Doubling Cube and Capsize to your hand.
- Repeat from step 2.
How to execute this combo
The "Doubling Cube + Capsize" combo takes 5 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 artifact ETB, Infinite artifact LTB, Infinite storm count, Infinite blue mana, Infinite magecraft triggers, Infinite mana permanents you control can produce, Return any number of permanents to their owner's hand during each of your turns, Lock, Mass Land Denial.
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.