How it works
Prerequisites
- You control at least one additional nontoken Forest.
Steps
- 1Activate Phyrexian Altar by sacrificing a nontoken Forest, which is a creature due to Ambush Commander, adding one mana of any color.
- 2When the Forest dies, Yedora triggers, returning the Forest from your graveyard to the battlefield face down as a Forest land.
- 3Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?