Brawler, Big Bang Knuckle Dragon

[ACT](VC):[Legion 20000]"Brawler, Big Bang Slash Dragon"(If your opponent's vanguard is grade 3 or greater, this unit may return four cards from your drop zone into your deck once, search your deck for the specified card, and Legion) [ACT](VC):[Counter-Blast 2]-card with "Brawler" in its card name] If this unit is [Legion], until end of turn, this unit gets [Power] +5000 and "[CONT](VC):This unit battles all of your opponent's units in the front row in one attack.". [AUTO](VC):[Soul-Blast 1] When this unit attacks a vanguard, you may pay the cost. If you do, this unit gets [Power] +3000 until end of that battle.