Riverchurn Monument + Cut Your Losses
Produces: Infinite mill for up to two target players
- Color identity
- U
- Mana
- {6}{U}{U}{U}{U}
Prerequisites
You have not activated Riverchurn Monument's exhaust ability.
Steps
- Cast Cut Your Losses by paying {4}{U}{U}, causing a player to mill half their library, rounded up.
- Activate Riverchurn Monument's exhaust ability by paying {2}{U}{U} and tapping it, causing each player to mill cards equal to the number of cards in their graveyard, thus causing the player targeted by Cut Your Losses to mill the rest of their library.
How to execute this combo
The "Riverchurn Monument + Cut Your Losses" combo takes 2 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 mill for up to two target players.
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.