Sword Master of Successive Victory, Houzan

/:When this unit attacks a vanguard, choose one of your opponent's rear-guards, return it to their hand, and if your opponent's vanguard is grade 2 or greater, this unit gets +10000 until end of that battle. (This effect is mandatory) :When this unit is rode upon by a grade 3, if your opponent has three or more rear-guards, choose one of your vanguards, and it gets +1/drive +1 until end of turn.