Ice Prison Hades Emperor, Cocytus "Яeverse"

Drop:At the end of the battle your vanguard with "Cocytus" in its card name attacked a grade 3 or greater vanguard, if it is the first battle of this turn, [ 1 & discard four cards from your hand], and lock all of your rear-guards. Then, if you have five locked cards, ride this card as , and for each grade 3 card in your soul, choose one of your locked cards, unlock it, and this unit gets +10000 until end of turn. :When this unit is attacked, [retire three of your rear-guards], and this unit gets +10000 until end of that battle for every ten cards in your drop.