K9-66X "Jacks" (Doom of Dimensions 67515699/101), Super Rare. Market price $0.30, up 11.1% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.
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.
| Week | Market price |
|---|---|
| 2026-W31 | $0.24 |
| 2026-W32 | $0.23 |
| 2026-W33 | $0.29 |
| 2026-W34 | $0.28 |
| 2026-W35 | $0.28 |
| 2026-W36 | $0.27 |
| 2026-W37 | $0.30 |
K9-66X "Jacks" from Doom of Dimensions (67515699/101) has a market estimate of $0.30, up 11.1% this week. Prices are estimates from TCGPlayer and Cardmarket.
It is a Super Rare from Doom of Dimensions, a 101-card set.
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