Il Blud (Quarter Century Secret Rare) [RA03-EN186-QCSR]

This card is treated as a Normal Monster while face-up on the field or in the GY. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
• Once per turn: You can Special Summon 1 Zombie monster from your hand or either GY, but if this card leaves the field, destroy all Zombie monsters Special Summoned by this effect.