Drilling Mandrill
Level 7 EARTH Machine Effect Monster
ATK 1700
DEF 2000
[Requirement] You can activate during your Main Phase that this card was Normal or Special Summoned.
[Effect] Choose a number of face-down Defense Position monsters your opponent controls x [Up to the number of face-up monsters (Machine-Type) you control] and change them to face-up Attack Position. The original ATK of the monsters changed to face-up Attack Position by this effect becomes 0 until the end of the turn.