Every distinct wording since 2010, newest first.
April 14, 2023 · March of the Machine
As the declare attackers step begins, the active team declares attackers. For each attacking creature, the attacking team announces which defending player, planeswalker, or battle that creature is attacking. The active team has one combined attack, and that set of attacking creatures must be legal as a whole. See rule 508.1.
June 5, 2017 · Commander Anthology
As the declare attackers step begins, the active team declares attackers. For each attacking creature, the attacking team announces which defending player or planeswalker that creature is attacking. The active team has one combined attack, and that set of attacking creatures must be legal as a whole. See rule 508.1.