Dragonic Overlord "The Яe-birth"

:At the beginning of your battle phase, [you have one or more rear-guards, and lock all of your rear-guards], and until end of turn, at the end of the next battle this unit attacked, [ 1 & discard a card from your hand], and this unit. :When this unit attacks a vanguard, 1, and for every two of your locked cards, choose one of your opponent's rear-guards, and retire them. :At the end of the battle this unit attacked, if you have five or more locked cards, and you have four or more cards in your damage zone, [discard two cards from your hand], this unit, get an Imaginary Gift:Force.