Effect
Cannot be Normal Summoned, unless you control a "Ghostrick" monster. Once per turn: You can change this card to face-down Defense Position. While this card is face-up on the field, you can Normal Summon 1 "Ghostrick" monster in addition to your Normal Summon/Set. (You can only gain this effect once per turn.) You cannot Special Summon any monsters, except DARK monsters.
"Ghostrick Mummy" can only be Normal Summoned in face-up Attack Position if you control a face-up "Ghostrick" monster.
The monster effect "Once per turn, you can change this card to face-down Defense Position" is an Ignition Effect. (It does not target.)
The monster effect "While this card is face-up on the field, you can Normal Summon 1 'Ghostrick' monster in addition to your Normal Summon/Set" is a Continuous Effect.
Even if you control multiple "Ghostrick Mummy" monsters, you can only perform the additional Normal Summon of a "Ghostrick" monster once per turn via the effect "you can Normal Summon 1 'Ghostrick' monster in addition to your Normal Summon/Set".
When performing a Normal Summon via the effect "you can Normal Summon 1 'Ghostrick' monster in addition to your Normal Summon/Set", you can only perform a face-up Normal Summon.
The monster effect "While this card is face-up on the field, you cannot Special Summon monsters, except DARK monsters" is a Continuous Effect.
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