How it works
Prerequisites
- Agatha of the Vile Cauldron has power 5 or greater.
Steps
- 1Activate Thundering Spineback by paying due to Agatha of the Vile Cauldron, creating a 3/3 Dinosaur creature token.
- 2Activate Phyrexian Altar by sacrificing the Dinosaur, adding .
- 3Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?