K9-66X "Jacks"
K9-66X "Jacks" is a Xyz Effect Monster in the K9 archetype, first released in 2025 in Doom of Dimensions. It has 1 printing across 1 set (Super Rare). DOOD-EN047 Super Rare sells for about $0.30. In the TCG it is currently unlimited (3 copies).
Market price · TCGPlayer
Updated Oct 1, 2026
$0.30
Type
Fiend
Rank
5
ATK
2600
DEF
2500
2 Level 5 monsters<br>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.<br>• 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.
Appears in 1 expansion
Printings (1)
| expansion | Code | Rarity | Price | Buy |
|---|---|---|---|---|
| Doom of Dimensions | DOOD-EN047 | Super Rare | $0.30 |
K9-66X "Jacks": FAQ
How much is K9-66X "Jacks" worth?+
K9-66X "Jacks" currently sells for $0.30 on TCGPlayer. The exact value depends on the printing, rarity, edition and condition — scan the card with YuScan to see the price of your copy.
Which sets was K9-66X "Jacks" printed in?+
K9-66X "Jacks" appears in 1 set: Doom of Dimensions.
Is K9-66X "Jacks" legal in tournaments?+
On the current TCG Forbidden & Limited List, K9-66X "Jacks" is unlimited (3 copies).
What is the passcode of K9-66X "Jacks"?+
The 8-digit passcode printed on K9-66X "Jacks" is 67515699.
K9
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