Chained to the Rocks

Auras attached to the exiled creature will be put into their owners' graveyards (unless they have bestow). Equipment attached to the exiled creature will become unattached and remain on the battlefield. Any counters on the exiled creature will cease to exist.

If a creature token is exiled, it ceases to exist. It won't be returned to the battlefield.

If the land Chained to the Rocks is enchanting stops being a Mountain or another player gains control of it, Chained to the Rocks will be put into its owner's graveyard when state-based actions are performed.

In a multiplayer game, if Chained to the Rocks's owner leaves the game, the exiled card will return to the battlefield. Because the one-shot effect that returns the card isn't an ability that goes on the stack, it won't cease to exist along with the leaving player's spells and abilities on the stack.