K9-66X "Jacks"
Xyz Monster

2 Level 5 monsters If this card is Xyz Summoned, or if your opponent activates a monster effect in the hand or GY: You can detach 1 material from this card, then target 1 monster on the field; destroy it. You can only use this effect of "K9-66X "Jacks"" once per turn. A "K9" Xyz Monster that has this card as material gains this effect. ● During any turn in which your opponent has activated a monster effect in the hand or GY, any battle damage this card inflicts to your opponent is doubled.
About the card
K9-66X "Jacks" is a DARK Fiend Xyz Monster, Rank 5, with 2600 ATK and 2500 DEF.
It lives in the Extra Deck and enters the field by Xyz Summon.
It belongs to the K9 archetype.
It is unrestricted on the TCG Forbidden & Limited List: a deck can run up to 3 copies.
It came out in the TCG in 2025 and has been printed in 1 set (Doom of Dimensions).
Sets it was printed in
- Doom of Dimensions 2025SR Super Rare
More K9 cards
Card data and images provided by YGOPRODeck.











