How it works
Prerequisites
- Xantcha on the battlefield under an opponent's control.
Steps
- 1Activate Grim Monolith's first ability by tapping it, adding .
- 2Activate Xantcha by paying , causing its controller to lose 2 life and you to draw a card.
- 3Activate Mind over Matter by discarding a card, untapping Grim Monolith.
- 4Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Powerful tier?
Spellbook classifies this as Powerful — not for these brackets.