Direful Doll, Shelby

:When this unit attacks a grade 3 or greater unit, [put a unit card with "Direful Doll" in its card name from drop into soul], and this unit gets +5000 until end of that battle for each grade of the card put into soul for this cost. At the end of that battle, bind this unit. :When this unit's attack hits a grade 3 or greater vanguard, choose one of your opponent's rear-guards, and retire it.