How it works
Prerequisites
- Gutter Grime has slime counters on it at least equal to the toughness of the creature card in your hand.
- Creature castable for
Steps
- 1Cast the creature card in your hand by paying .
- 2Either that creature dies as a state-based action due to having zero toughness, or activate Ashnod's Altar by sacrificing that creature, adding
- 3Gutter Grime triggers, putting a slime counter on it and creating a X/X Ooze creature token.
- 4Activate Ashnod's Altar by sacrificing the Ooze, adding .
- 5When the Ooze dies, Colfenor triggers, returning the creature card from your graveyard to your hand.
- 6Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?