Heaven and Earth Combination, Triearth

-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] this card on your from face down. :[Choose a face down card from your G zone, and turn it face up] Until end of turn, this unit gets +10000, and ":When this unit's attack hits a vanguard, choose and retire one of your opponent's rear-guards for every 20000 of this unit.".