From the glossary of the Comprehensive Rules (September 20, 2024—Duskmourn: House of Horror)
- Beginning of Combat Step
- Part of the turn. This step is the first step of the combat phase. See rule 507, “Beginning of Combat Step.”
From the Comprehensive Rules (September 20, 2024—Duskmourn: House of Horror)
- 507. Beginning of Combat Step
- 507.1. First, if the game being played is a multiplayer game in which the active player’s opponents don’t all automatically become defending players, the active player chooses one of their opponents. That player becomes the defending player. This turn-based action doesn’t use the stack. (See rule 506.2.)
- 507.2. Second, the active player gets priority. (See rule 117, “Timing and Priority.”)