Drill Armed Dragon

You can send this card and 1 other WIND monster from your hand to the GY; for the rest of this turn, all WIND Dragon monsters you control gain 300 ATK. You can banish any number of Dragon monsters that are Level 7 or higher and/or WIND from your GY; add 1 Dragon monster from your Deck to your hand with a Level equal to the number banished, except "Drill Armed Dragon". You can only use each effect of "Drill Armed Dragon" once per turn.