Worldgorger Dragon

• WWizards of the Coast2022-12-08
  Official Ruling
  If Worldgorger Dragon leaves the battlefield before its enters-the-battlefield ability resolves, the "leaves-the-battlefield" ability will trigger and resolve first. It won't return anything. Then the enters-the-battlefield ability will exile all other permanents you control indefinitely.
• WWizards of the Coast2022-12-08
  Official Ruling
  If an Aura is exiled with Worldgorger Dragon and then returns to the battlefield, the player who controls the Aura as it enters the battlefield chooses what it will enchant. An Aura put onto the battlefield this way doesn't target anything (so it could be attached to an opponent's permanent with hexproof, for example), but the Aura's enchant ability restricts what it can be attached to. If the Aura can't legally be attached to anything, it stays exiled. It can't enter the battlefield enchanting a permanent that enters the battlefield at the same time.

Rulings via Scryfall

• WO
  Wizards of the Coast2015-01-19

  Worldgorger Dragon was unbanned in legacy on January 19, 2015. Worldgorger Dragon has a strange and powerful interaction with Animate Dead. It is not clear that this is more powerful than animating Griselbrand, and this interaction may add an interesting variant. Source: https://magic.wizards.com/en/news/feature/banned-and-restricted-announcement-2015-01-19