Text (9th/10): Untap all creatures that attacked this turn. After this main phase, there is an additional combat phase followed by an additional main phase.
A creature that must attack each turn, must only attack once that turn. It is not forced into each attack that turn. [Duelist Magazine #17, Page 48]
If a creature becomes forced to attack by an ability such as the Norritt, it must attack in the next available attack. Once it attacks once, it removes all "you must attack" restrictions of existing effects on it. [WotC Rules Team 1997/03/14]
If a spell or ability can only be played "before combat", it can be played after this spell is played because it is now before another combat phase. [Duelist Magazine #17, Page 48]
If a creature has a cost that must be paid in order to attack or block, it need only pay once to attack in any other combats that turn. [WotC Rules Team 1997/03/14] This is true even if the wording on the card makes it sound otherwise.
Abilities that trigger when a creature attacks, blocks, or is blocked will trigger during each combat that turn. Thus, a creature with Rampage will get the bonus added during each attack. [WotC Rules Team 1997/03/14]
Forking this card during your opponents turn will not allow you to attack during their turn. [WotC Rules Team 1997/03/14]
If you manage to resolve this spell on another player's turn, that player gets the extra combat phase, not you. [bethmo 1999/09/27] Can happen if you Fork another player's casting of this spell.
It only creates an additional attack and main phase if it resolves during a main phase. [WotC Rules Team 2003/12/01]
