408. Hide

408.1. Hiding a card is the act of placing a card facedown at a Battlefield you control.

408.2. Hiding is a Discretionary Action.

408.2.a. The Hidden keyword allows a player to pay a cost to Hide a card any time they have a Hidden card in their hand or Champion Zone and meet the prerequisites. See rule 737. Hidden for more information.

408.3. Cards that are facedown at Battlefields have their gameplay properties and permissions defined by the effect that put them there. Example: Cards that players Hide with the Hidden keyword can be Played for [0] on any subsequent turn as a property of the Hidden keyword.

408.4. If a facedown card would be put into a zone whose Privacy is Private or Secret , or if the game ends, its owner reveals it to all players. See rule 127. Privacy for more information.