Theres no set in stone definition for it because its not supposed to happen
Labyrinth of Nightmare X TRAP Continuous Once per turn, during each player's End Phase: Change the battle positions of all face-up monsters the turn player controls
Only, instead of you losing life when you cast it, you give your foe the same advantage
Compatible with Dixit, Inis, The Search for Planet X, Tainted Grail: The Fall of Avalon, ISS Vanguard, Nucleum, and Vantage
While other similar edict creatures exist, such as Plaguecrafter, Gatekeeper of Malakir, and Accursed Marauder, I consider Sheoldred a better card overall
The main Chocobo in the set is the Traveling Chocobo, which has different color variations that players can find in collector booster packs, including the serialized "golden Chocobo," of which there will be 77 in the entire world