Seeker, Thing Saver Dragon

:[Legion 20000]"Blaster Blade Seeker"(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) :[ 2 & 3 & Choose two cards from your hand, and discard them] At the end of the battle that this unit attacked a vanguard, if this unit is [Legion], you may pay the cost. If you do, search your deck for up to one card named "Seeker, Thing Saver Dragon", ride it as , shuffle your deck, choose a card named "Blaster Blade Seeker" from your soul, and [Legion]. :When this unit attacks a vanguard, this unit gets +2000 until end of that battle.