If an object is no longer in the zone it’s expected to be in as an effect causes it to deal damage, its last known information is used to determine whether it had wither.
July 23, 2021 · Adventures in the Forgotten Realms
If an object changes zones before an effect causes it to deal damage, its last known information is used to determine whether it had wither.
April 22, 2021 · Strixhaven
If a permanent leaves the battlefield before an effect causes it to deal damage, its last known information is used to determine whether it had wither.
July 13, 2013 · Magic 2014
rule 702.80b not present in this release
September 30, 2011 · Innistrad
Some objects have abilities that refer to the number of creatures the permanent devoured. "It devoured" means "sacrificed as a result of its devour ability as it entered the battlefield."
June 17, 2011 · Commander 2011
Some objects have abilities that refer to the number of creatures the permanent devoured.
April 1, 2011 · Duel Decks: Knights vs. Dragons
A creature "attacks alone" if it's the only creature declared as an attacker in a given combat phase. See rule 506.5.
February 4, 2011 · Mirrodin Besieged
A creature “attacks alone” if it’s the only creature declared as an attacker in a given combat phase. See rule 506.5.
October 1, 2010 · Scars of Mirrodin
A creature “attacks alone” if it’s the only creature declared as an attacker in a given combat
February 1, 2010 · Worldwake
A creature "attacks alone" if it's the only creature declared as an attacker in a given combat phase. See rule 506.5.