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.
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.