Inys Haen

The Planechase die gives every Plane two ways to leave a mark: roll the chaos symbol and its chaos ability fires, roll the planeswalk symbol and you're forced off. This Cridhe splits its work across all three of those moments. The graveyard-filling is quiet and steady: mill three when you arrive, mill three again each upkeep you stay, a slow accumulation that has nothing to do with the die at all. The chaos trigger is the payoff for staying put and rolling well: it reaches into the yard the upkeep has been stocking and buys back a nonland card to hand. So the loop isn't die-driven fueling; it's the passive mill doing the stocking while chaos does the plundering, and the longer you linger the deeper the pool the chaos symbol can fish from. The planeswalk-away clause is the shared-table wrinkle: leaving returns every player's graveyard lands to the battlefield tapped, a symmetrical gift that quietly favors whoever has been fetching or sacrificing lands the hardest. That leaves a genuine tension between the two die faces. Staying compounds your mill and keeps the chaos recursion online; leaving cashes out a board of returned lands for the whole table. Planes carry no mana cost and can't be cast, so this exists only inside the Planechase variant, evaluated not by what it costs to play but by what it does to the shape of a game already in motion.