2 Level 3 monsters Monsters your opponent controls cannot target face-up "Ghostrick" monsters, or any face-down Defense Position monsters, for attacks, except this one. You can detach 1 Xyz Material from this card, then target 1 Set card your opponent controls; destroy that target. You can only use this effect of "Ghostrick Alucard" once per turn. If this card is sent to the Graveyard: You can target 1 other "Ghostrick" card in your Graveyard; add that target to your hand.
Destroys your opponent's face-down Monster Cards / Destroys your opponent's face-down Spell Cards / Destroys your opponent's face-down Trap Cards
2 Xyz Materials
Manages attack targets
Don't forget there is another special ability this card has. Once you have two of your own ghostrick alucard on your side of the field at the same time, your opponent automatically cannot attack. But the owner of the ghostrick monsters can. Thats because both cards effects helps each other at the same time.
generic Rank 3 that destroys any Set card, but sadly, is more useful against Set monsters than Set backrow since the text says "destroy that target", meaning the target must remain Set during the resolution of this card's effect.
Nowadays most backrow cards your opponent Set are the ones that can be activated anytime, meaning they can be chained to this card, rendering this card's effect useless.
You are really stupid. Alucard only destroying set cards means that it won't do anything if it's a continuous trap. Meanwhile Vermillion, Spirit of White and Scrap Dragon destroy the trap no matter if it's continuous or not.