If you're looking for the flavor text for this event, see The Multiversal Vortex (flavor text).
The Multiversal Vortex is an event that can be reached from the [A card picturing a whirling cloud.] option in Cards Of Fate. It can also simply be a random event.
In the event, you can choose to throw one of your items (that isn't on cooldown) into the Vortex, which will then give a true copy of that item to every other player in the game, or choose not to throw in anything and die.
If the item you chose was an Improbability Device, 11(?) random items are generated and split between all players and the event ends.
If you choose to throw in an item, you will then be shown 6 item options; pick one and it will be given to all players in the game.
The event ends upon continuing again.