Effect
Cannot be Normal Summoned, unless you control a "Ghostrick" monster. Once per turn: You can change this card to face-down Defense Position. When you take damage: You can discard this card; Special Summon 1 "Ghostrick" monster from your Deck in face-down Defense Position. You can only use this effect of "Ghostrick Mary" once per turn.
"Ghostrick Mary" can only be Normal Summoned in face-up Attack Position if you control a face-up "Ghostrick" monster.
The monster effect "You can change this card to face-down Defense Position once per turn" is an Ignition Effect. (It does not target.)
The monster effect "When you take damage from a battle or card effect: You can discard this card; Special Summon 1 'Ghostrick' monster from your Deck in face-down Defense Position" is a Trigger Effect that activates in the hand. (It does not target. Discarding "Ghostrick Mary" from your hand is the cost to activate this effect.)
The monster effect "Special Summon 1 'Ghostrick' monster from your Deck in face-down Defense Position" is an optional effect that can be activated when you take damage from a battle or card effect. (It can also be activated during the Damage Step.)
If you take damage from a card effect that was activated as Chain 2 or higher, you cannot activate the monster effect "Special Summon 1 'Ghostrick' monster from your Deck in face-down Defense Position."
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