Text (VI+errata): This turn and next turn, creatures can't attack, and players and permanents can't be the targets of spells or activated abilities. [Oracle 2006/01/15]
Can be played after your attack. [bethmo 1997/02/10]
It affects the current turn and the next turn. This could affect the same player twice if they have two turns in a row, or it could affect different players. In a multiplayer game it affects exactly two turns, not a full round of turns. [D'Angelo 1997/08/18]
Does not stop triggered abilities since triggered abilities are simply put on the stack. They are never "played". A fine but important distinction. [D'Angelo 1999/07/10]
