Effect
During your turn: Target 1 "Mecha Phantom Beast" monster on the field; this turn, its ATK becomes double its original ATK, it is unaffected by other Spell/Trap effects, also if it attacks a Defense Position monster, inflict piercing battle damage to your opponent. If this effect is applied to that monster, destroy all Machine-Type monsters you control during the End Phase of this turn. Other monsters cannot attack during the turn you activate this card.
This effect targets 1 face-up "Mecha Phantom Beast" monster you control.
This effect can be activated during the Damage Step, but cannot be activated during damage calculation.
"Supersonic Wave" cannot be activated during Main Phase 2 or the End Phase.
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