B.E.S. Crystal Core [DR04-EN021] Super Rare Fairy negate that face-up monster's effects

negate that face-up monster's effects until the end of this turn

2: Change 1 monster on the field to face-down Defense Position or face-up Attack Position

When a card or effect is activated that targets a card on the field (Quick Effect): You can discard 1 card

You can only use this effect of "Magical Musketeer Starfire" once per turn

Fusion Material Monsters that are listed on a Dragon-Type Fusion Monster Card

B.E.S. Crystal Core [DR04-EN021] Super Rare Fairy negate that face-up monster's effectsSet: Dark Revelation Volume 4 Card type: Effect Monster Rarity: Super Rare Attack: 2100 Defense: 1000 When this card is Normal Summoned, put 3 counters on it. This card cannot be destroyed by battle. If this card battles a monster, remove 1 counter from this card at the end of the Damage Step. If you cannot, destroy it. Once per turn, during your Main Phase, you can change 1 face up Attack Position monster your opponent controls to face up Defense