The first attack is called Sharpshooting, and it requires only a sole Water Energy. The attack deals 30 damage to 1 of your opponent’s Pokemon. Weakness and Resistance are not applied for Benched Pokemon. Any Pokemon that can come out and deal damage on the first turn it has the chance to attack is excellent.
The second attack, Aqua Blast, doesn’t look like anything special, but it deals 120 damage for only 3 energy – 2 Water and 1 Colorless. It does require you to discard one Water Energy attached to Greninja EX upon attacking, however. Still, that’s strong damage for a 3-energy attack, even with the downside.
Greninja EX is certainly the most aggressive of the Kalos Power tin promos. While Delphox EX has the ability to do more damage, and Chesnaught EX is a strong early-game tank, Greninja EX has the ability to see the most play, finding a home in any Water-based deck.