Gravity Bolt Dragon

(This ability is active if you have four or more damage): 1 When this unit's drive check reveals a grade 3 Narukami, you may pay the cost. If you do, choose one of your opponent's rear-guards in the front row, retire it, and this unit gets +5000 until end of that battle. : 1 Choose one of your locked cards, and unlock it. /:Lord (If you have a unit without a same clan as this unit, this unit cannot attack)