Pretty much, yeah.

It's based off a 4 way I've hosted before with some friends some MYB, and took place in a higher ranked one on the same fight.

The arena is 5 black blobs.

Each participant picks one, and customizes it how they like, and every turn or two, it randomly switches to one or another - including the 5th, which is blank.

Anything not 'local' to the blob after creation is moved to the other, or anything that is effected(Say one is made into the Eternal Battleground, and a sword is picked up, then that sword is moved with the participants and such)