x2Elusive Master
Once during your turn (before your attack), if this Pokémon is the last card in your hand, you may play it onto your Bench. If you do, draw 3 cards.
Mist SlashThis attack's damage isn't affected by Weakness, Resistance, or any other effects on your opponent's Active Pokémon.
Dark Mist-GXPut 1 of your opponent's Benched Pokémon and all cards attached to it into your opponent’s hand. (You can’t use more than 1 GX attack in a game.)
Can you use Greninja GX's "Elusive Master" Ability while Power Plant is in play?
Yes, you can. You get to put Greninja GX onto your bench AND draw three cards because Elusive Master activates while it is in your hand before it comes into play, and therefore is not blocked by Power Plant.