Illusionary Mask

Artifact -
{X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate this ability only any time you could cast a sorcery.

Artifact -
{X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate only as a sorcery.

Artifact -
{X}: You may put a creature card with converted mana cost X or less from your hand onto the battlefield face down as a 0/1 creature. Put X mask counters on that creature. Activate this ability only any time you could cast a sorcery. The creature's controller may turn the creature face up any time he or she could cast an instant by removing all mask counters from it. This effect ends if the creature is turned face up.

Artifact -
{X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate this ability only any time you could cast a sorcery.

Artifact -
{X}: You may put a creature card with converted mana cost X or less from your hand into play face down as a 0/1 creature. Put X mask counters on that creature. Play this ability only any time you could play a sorcery. The creature's controller may turn the creature face up any time he or she could play an instant by removing all mask counters from it. This effect ends if the creature is turned face up.

Artifact -
{X}: You may put a creature card with converted mana cost X or less from your hand onto the battlefield face down as a 0/1 creature. Put X mask counters on that creature. Activate this ability only any time you could cast a sorcery. The creature's controller may turn the creature face up any time he or she could cast an instant by removing all mask counters from it. This effect ends if the creature is turned face up.

Artifact -
{X}: Put a creature card with converted mana cost X or less from your hand into play face down as a 0/1 creature. Put X mask counters on that creature. Play this ability only any time you could play a sorcery. The creature's controller may turn the creature face up any time he or she could play an instant by removing all mask counters from it. This effect ends if the creature is turned face up.

Artifact -
{X}: You may put a creature card with converted mana cost X or less from your hand into play face down as a 0/1 creature. Put X mask counters on that creature. Play this ability only any time you could play a sorcery. The creature's controller may turn the creature face up any time he or she could play an instant by removing all mask counters from it. This effect ends if the creature is turned face up.