For each player,
exileTo exile an object, move it to the exile zone from wherever it is. See rule 406, “Exile.” (CR 701.13) up to one target nonland permanent that player controls. For each permanent exiled this way, its controller cloaks the top card of their library. (To
cloakTo cloak a card, turn it face down. It becomes a 2/2 face-down creature card with ward , no name, no subtypes, and no mana cost. Put that card onto the battlefield face down. That permanent is a cloaked permanent for as long as it remains face down. The effect defining its characteristics works while the card is face down and ends when it’s turned face up.
Any time you have priority, you may turn a cloaked permanent you control face up. This is a special action that doesn’t use the stack (see rule 116.2b). To do this, show all players that the card representing that permanent is a creature card and what that card’s mana cost is, pay that cost, then turn the permanent face up. The effect defining its characteristics while it was face down ends, and it regains its normal characteristics. (If the card representing that permanent isn’t a creature card or it doesn’t have a mana cost, it can’t be turned face up this way.)
If a card with morph is cloaked, its controller may turn that card face up using either the procedure described in rule 702.37e to turn a face-down permanent with morph face up or the procedure described above to turn a cloaked permanent face up.
If a card with disguise is cloaked, its controller may turn that card face up using either the procedure described in rule 702.168d to turn a face-down permanent with disguise face up or the procedure described above to turn a cloaked permanent face up.
If an effect instructs a player to cloak multiple cards from a single library, those cards are cloaked one at a time.
If an effect instructs a player to cloak a card and a rule or effect prohibits the face-down object from entering the battlefield, that card isn’t cloaked. Its characteristics remain unmodified and it remains in its previous zone. If it was face up, it remains face up.
If a cloaked permanent that’s represented by an instant or sorcery card would turn face up, its controller reveals it and leaves it face down. Abilities that trigger whenever a permanent is turned face up won’t trigger.
See rule 708, “Face-Down Spells and Permanents,” for more information. (CR 701.58) a card, put it onto the battlefield face down as a 2/2 creature with
ward Ward is a triggered ability. Ward [cost] means “Whenever this permanent becomes the target of a spell or ability an opponent controls, counter that spell or ability unless that player pays [cost].”
Some ward abilities include an X in their cost and state what X is equal to. This value is determined at the time the ability resolves, not locked in as the ability triggers. (CR 702.21). Turn it face up any time for its mana cost if it's a creature card.)