In a multiplayer game using the Free-for-All or similar formats, the active player declares attackers during the Combat Phase. Each attacking creature is individually assigned to a specific defending player, planeswalker, or battle — and different creatures can be assigned to different opponents in the same attack. This is explicitly supported by the rules governing multiplayer combat.
CR 802.2 states that in a multiplayer game, the attacking player declares which player, planeswalker, or battle each attacking creature is attacking. There is no requirement that all attackers target the same opponent. Each creature's assignment is made independently during the declare attackers step (CR 508.1).
Each defending player then only declares blockers for the creatures attacking them specifically (CR 802.3). So if you attack Player A with a 3/3 and Player B with a 2/2, Player A can only block the 3/3, and Player B can only block the 2/2.
Concrete Example: You control a 3/3 Grizzly Bears and a 2/2 Runeclaw Bear. You declare your 3/3 as attacking Player A and your 2/2 as attacking Player B. Player A may block the 3/3 with their creatures, and Player B may independently block the 2/2 with theirs. Both attacks resolve in the same combat phase.
Note that some multiplayer variants like Two-Headed Giant alter these rules significantly (CR 810), but in standard multiplayer Free-for-All, splitting attackers among opponents is fully legal and a common strategic choice.
Unofficial fan resource — not affiliated with or endorsed by Wizards of the Coast. Answers are AI-generated estimates grounded in the Comprehensive Rules and are not a substitute for an official judge. Verify anything match-critical.