The player wants to make a different decision for a spell or ability immediately after all choices have been made and communicated for putting it onto the chain. Example: 1. A player plays Discipline indicating a unit. They immediately change their mind and choose a different unit, or choose not to play the Discipline at all.
§ 509.4.a Tournament Rules PDF (officieel)
§ 509 Gameplay Decisions
§ 509.4 At high OPL, a player can reverse their most recent action and make a different decision for that action (including not taking it at all) if no new action has been taken by either player and the following is true:
