How it works
Prerequisites
- You control at least five Swamps.
Steps
- 1Activate the creature with Umbral Mantle attached using Cabal Coffers's ability by paying and tapping it, adding at least .
- 2Activate the creature by paying and untapping it, giving it +2/+2 until end of turn.
- 3Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?