Rayne vs Gelient: A Yu-Gi-Oh Rush Duel

What are a few prickles gonna do against machines?

Drilling Mandrill
[REQUIREMENT] During your Main Phase that you Normal or Special Summoned this card.
[EFFECT] Change face-down Defense Position monsters on your opponent's field to face-up Attack Position, up to [the number of face-up Machine Type monsters on your field], and change their original ATK to 0 until the end of this turn.

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