[ Fiend / Effect ]When your opponent activates a monster effect, or an opponent's monster declares an attack (Quick Effect): You can Special Summon this card from your hand.
You can only use this effect of "Multiplying Kuriboh!" once per turn.
Once per turn, when your opponent activates a monster effect on the field, or during damage calculation, when an opponent's monster attacks (Quick Effect): You[ can add to your hand, or Special Summon, 1 "Dark Magician" or 1 monster with 300 ATK/200 DEF from your Deck or GY, then you can change that opponent's monster's ATK to 0.
ATK/ 300
DEF/ 200
DARK
1