K9-66X "Jacks"
Xyz Effect Monster
K9-66X "Jacks" is a Xyz Effect Monster (DARK/Fiend, Rank 5) with 2600 ATK / 2500 DEF. First printed in Doom of Dimensions (2025).
- Type
- XYZ Monster
- Attribute
- DARK
- Monster type
- Fiend
- Rank
- 5
- ATK / DEF
- 2600 / 2500
- Archetype
- K9
- Banlist
- Unlimited in the TCG, OCG, and Master Duel
- TCG release
- 2025-09-25
- Printings
- 1
Card text
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.
Approximate value
≈$0.28
A rough figure from recent listings (updated 2026-06-09), not a market value or official price. It varies a lot with printing, condition, edition, rarity, and grading. Check current listings below before buying or selling.
Find a copy
As an Amazon Associate I earn from qualifying purchases. As an eBay Partner Network affiliate, we may earn commissions from qualifying purchases. Some outbound marketplace links may be affiliate links; if you buy through them we may earn a commission, at no extra cost to you.
Printings & rarities
All printings →| Set | Set code | Rarity | Release | Price* |
|---|---|---|---|---|
| Doom of Dimensions | DOOD-EN047 | Super Rare | 2025-09-25 | $0.28 |
*Approximate, from recent marketplace listings, not market values.
K9-66X "Jacks" in other languages
| Japanese | K９－６６６号 “Jacks” |
| Korean | K9－666호 “Jacks” |
| Chinese | K9－666号 “结克” |
| German | K9-66X „Jacks“ |
| French | K9-66X "Jacks" |
| Italian | K9-66X "Jacks" |
| Spanish | K9-66X "Jacks" |
| Portuguese | "Jacks" K9-66X |
