CR / RELEASE 2026-07-24
Rule 190.4
Control is established by having Units at a Battlefield at the end of a Showdown or Combat after applying the contested status.
Rule hierarchy
Parent
190BattlefieldsDirect children
190.4.aIf a player controls Units at a Battlefield, outside of Combat, they maintain Control of that Battlefield for as long as they have Units at that Battlefield.190.4.bWhile a Combat or Showdown is ongoing at a Battlefield, Control of that Battlefield cannot change until instructed by steps of the Combat or Showdown.190.4.cIf a player has no Units at a Battlefield and the turn is in an Open state, they lose Control of that Battlefield in the following cleanup unless there is a Combat or Showdown ongoing there.