This one is based on Cloud Strife's game Final Fantasy 7 by Square Enix after the first area of the game. It first came out with Cloud in Smash 4 and returns for Ultimate. At first it seems like a simple battlefield-like stage.
But the biggest change is these magic orbs. Once you grab them.
You can summon magical beings to cause damage. Some aren't so bad.
But none are anything to ignore.
And some are nearly world-ending... kinda. The summoner is always immune, so be sure to grab it before your foe does.
Not my favorite stage but one of the better ones for 3rd-party characters.