yu gi oh tournament decks Yu-Gi-Oh! Yugioh Complete Blackwing Deck Ready! : Toys & Games Yugioh Tournament ready deck -

Number 21: Frozen Lady Justice gains 1000 ATK for each Xyz Material attached to her

she's basically kind of a counter to Demons (or Archfiends, or Skulls...) because she apparently uses that whip to take control of the enemy fiends

either add it to your hand, or Special Summon it if it was a monster

But if youre more inclined for a good ol beatdown, then this cards second effect is exactly what youre looking for: If Black Luster Soldier Envoy of the Beginning destroys an opponents monster by battle, it can attack all over again

If you think these will bounce up in value further, you could always pick up one to open, and another to keep as an investment to see how it appreciates in value in the future