Perdition Dragon, Break Down Dragon (R)

[ACT](VC): Legion20000 Perdition Dragon Knight, Tarayev (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 (3)] If this unit is Legion, choose one of your opponent's rear-guards, and retire all of your opponent's rear-guards in the same column as that unit. Then, if the number of rear-guards your opponent has is two or less, choose a card from your damage zone, and turn it face up.
[AUTO](VC):When this unit attacks a vanguard, if you have another unit in the center column, this unit gets [Power]+3000 until end of that battle.