Wind-Up Magician (GENF-EN014)

If the effect of a "Wind-Up" monster is activated, except "Wind-Up Magician": You can Special Summon 1 Level 4 or lower "Wind-Up" monster from your Deck in face-up Defense Position. This effect can only be used once while this card is face-up on the field.

Spellcaster / Effect, Generation Force