Legendary Creature — Demon Dragon
Mystery Booster Commander Edition
53/100
Mixed in 2HG — symmetrical lock piece, but duel-shaped card.
Stax and tax effects tax two opponents for the price of one, while your team plans around them together.
Cards that reference 'the opponent' or single-combat framing lose reach when the table has two opponents.
Ratings start at a neutral 50 and are adjusted by rules derived from 2HG's structure — shared 60 life, shared turns, two opponents. They'll be recalibrated against real play rates once teams start submitting decklists.
Flying, trample, protection from Angels and from Archons
Players can't gain life.
When Balefang enters, target opponent creates a tapped Baneslayer Angel token. The token is goaded for the rest of the game. (It's a 
5/5 Angel creature with flying, first strike, lifelink, and protection from Demons and from Dragons.)
Shares the "symmetrical lock piece" axis — good candidates for your teammate's deck.
Suggestions are characteristic-based for now. Once teams submit pairings, this becomes a real co-occurrence score: played in X% of teams whose partner deck runs Balefang the Unslayable.
