Nightwatch Sprite
XYZ Monster
DARK Fiend
★1 ATK 0 DEF 500
2 Level 1 monsters
You can detach 1 material from this card, then target 1 face-up monster on the field; it loses 1000 ATK until the end of this turn.
If this card has no material: Send it to the GY, and if you do, Special Summon 1 Level 3 or lower monster from your Deck.
You can only use each effect of this card once per turn.