This card is very useful, both as an anti-support for Xyz Monsters and for supporting other "Djinn" monsters. Since the ATK gain is permanent, it can boost the power of all its fellow "Djinn" Xyz Monsters by 1000 points within two turns (especially since its effect can be applied during the opponent's turn). Considering that most of the Xyz "Dijinn" monsters have low ATK for their Ranks, this card can easily boost their power, making them more of a threat.
After your opponent has used enough Xyz Material this card can stop the secondary effects of "CXyz" and "Over-HundredNumber C" monsters by detaching their original counterparts. After that, they are extremely difficult to reattach, so the second effect can't be reestablished.