Cruel Dragon

(This ability is active if you have four or more damage):[ 1 & 1] When this unit attacks a vanguard, you may pay the cost. If you do, choose one of your opponent's grade 2 or less rear-guards, and retire it. {Hand}:[Reveal this card, choose your grade 2 or greater Kagero vanguard, and it] During the main phase of that turn, if your opponent's rear-guard is put into the drop zone, ride this card as , choose your vanguard, and that unit gets -3000 until end of turn. /:Lord (If you have a unit without a same clan as this unit, this unit cannot attack)