The player wants to undo a decision to exhaust or recycle runes. 1. A player exhausts two Calm runes. Before taking a new game action, the player decides they do not want to exhaust them, and readies them.
§ 509.4.d 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: