yugioh crocodile card Complete Custom Deck for Yu-Gi-Oh! GX 1 Tuner + 1+ non Krokodilus - Yugipedia

UR Ultra Rare Blue-Eyes Ultimate Dragon X LIGHT Level 12 [ DragonFusion ] ATK 4500 DEF 3800 "Blue-Eyes White Dragon" + "Blue-Eyes White Dragon" + "Blue-Eyes White Dragon" C Common Neo Blue-Eyes Ultimate Dragon X LIGHT Level 12 [ DragonFusionEffect ] ATK 4500 DEF 3800 "Blue-Eyes White Dragon" + "Blue-Eyes White Dragon" + "Blue-Eyes White Dragon" At the end of the Damage Step, if this Fusion Summoned card attacked, and this is the only face-up card you control: You can send 1 "Blue-Eyes" Fusion Monster from your Extra Deck to the GY

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Legality depends on the tournament format -- Trackblack can be legal in some formats and banned or restricted in others

These were all printed as prismatic secret rares

You can only use this effect of Dark Strike Fighter once per turn