Pile Armed Dragon (HAC1-EN174) [Hidden Arsenal: Chapter 1]

You can send 1 other WIND Dragon monster or 1 other Level 7 or higher Dragon monster from your hand to the GY; Special Summon this card from your hand. You can send 1 "Armed Dragon" monster from your hand or Deck to the GY, except "Pile Armed Dragon", then target 1 face-up monster you control; that targeted monster gains ATK equal to the Level of the monster sent to the GY x 300, until the end of this turn, also you can only attack with 1 monster this turn. You can only use each effect of "Pile Armed Dragon" once per turn.