Emblem of Destruction
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This Skill can be used if your Deck contains 5 or more Warrior Type monsters with 2600 or 2300 ATK and no other monsters with 1300 or more ATK.
[REQUIREMENT] None
[EFFECT] Until the end of this turn, all face-up monsters with 2300 or more ATK on your opponent's field lose 500 ATK and become Dragon Type, then if it is turn 4 onward, you can also send 1 card from your hand and 1 Level 7 monster from your Deck to the Graveyard. (Once per Duel.)
Other Source
"Buster Blader" Campaign