If I use Greninja ex's "Shinobi Blade" attack and choose to search my deck for a card, do I have to take a card and put it in my hand if I don't find one I want?
You don't have to search, but if you do you must take a card and put it into your hand.

Other known variants


×2
Shinobi BladeYou may search your deck for a card and put it into your hand. Then, shuffle your deck.


Mirage BarrageDiscard 2 Energy from this Pokémon. This attack does 120 damage to 2 of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Tera
As long as this Pokémon is on your Bench, prevent all damage done to this Pokémon by attacks (both yours and your opponent’s).
Pokémon ex rule
When your Pokémon ex is Knocked Out, your opponent takes 2 Prize cards.
If I use Greninja ex's "Shinobi Blade" attack and choose to search my deck for a card, do I have to take a card and put it in my hand if I don't find one I want?
You don't have to search, but if you do you must take a card and put it into your hand.
If I discard a Double Turbo Energy when using Greninja ex's "Mirage Barrage" attack, does it do 120 damage or 100 damage to two of my opponent's Pokemon?
You do 100 damage to the two. You first CHOOSE the energy you're going to discard, then do the damage (which is reduced for Double Turbo), and THEN discard the energy.