History of CR 310.9b

Every distinct wording since 2010, newest first.

August 7, 2026 · The Hobbit
A battle’s protector can never attack it. A battle can be attacked by any attacking player for whom its protector is a defending player. Notably, a Siege battle can be attacked by its own controller.
February 1, 2010 · Worldwake
rule 310.9b not present in this release