Sorcery, 4GGGG (8) Each player searches his or her library for any number of artifacts, creatures, enchantments, and lands and puts those cards into play. Each player shuffles his or her library afterwards.
Illus. Quinton Hoover
You can choose zero cards, and in fact must choose zero if your library is empty. [D'Angelo 1998/09/07]
Each player may choose a different number of cards. There is no requirement that various players choose the same number. [DeLaney 1998/08/12]
You still shuffle if you pick zero cards. [DeLaney 1998/08/12]
The controller of Incoming! chooses first, then puts all her choices into play at the same time, then repeat this round the table in turn order until every player has done it once. [Barclay 1998/08/13]
All cards come into play simultaneously. [QAS 1998/09/09]
Since the cards come into play simultaneously, you cannot put auras on permanents that are in the process of coming into play, and you cannot choose any of the permanents that are coming into play as targets or choices for "as played" or "as enters play" abilities. They are fair game for abilities that trigger when they "come into play". [D'Angelo 2007/03/25]
All tournament formats have banned cards from Unglued.
Unglued
(Rare)