K9-66X "Jacks"

DARK

[ Fiend / Xyz / Effect ] 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. ATK/ 2600 DEF/ 2500

How to Obtain

Strike of Justice

Popularity Ranking

Overall

66th

Among Monsters

45th

Usage Statistics

Vanquish Soul K9

100%

94%

Artmage

56%

44%

Mitsurugi

23%

77%

Crystron K9

46%

54%

Super Quant

43%

57%

Latest Decks with K9-66X "Jacks"

	Engines	Notes	Top	Place	Player	Price	Date
				—	KAT	1050 420	Apr 2, 2026					—	HyptoKrypto	1110 390	Apr 2, 2026					1st Place	さいぱち	1080 390	Apr 1, 2026					1847.34	illya63	1110 330	Apr 1, 2026					1852.99	随能所任	1080 360	Apr 1, 2026					1870.67	SCS 雨过天阴	1050 330	Apr 1, 2026					—	Ego	1050 450	Mar 31, 2026					—	Flamz	960 420	Mar 31, 2026					—	PainYGO	990 420	Mar 31, 2026					—	denial	1140 330	Mar 31, 2026

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