AbilityWater Shuriken
Once during your turn (before your attack), you may discard a Water Energy card from your hand. If you do, put 3 damage counters on 1 of your opponent's Pokémon.

XY is a set in the XY series. It was released on February 5, 2014. The printed size is 146, and the checklist is the same length. Greninja is 41/146, in position 41 of 146 on this checklist. Before it is 40 Frogadier, and after it is 42 Pikachu. The listed rarity is Rare Holo.
Greninja is a Stage 2 Water Pokémon with 130 HP. In the Pokédex this is Greninja (#658), generation 6 (Kalos). The card says it evolves from Frogadier. In this catalog that name is Frogadier (#657).
5ban Graphics illustrated this card. The same name is on 1,629 other cards in the catalog.
Greninja (#658) has 39 other cards in the catalog. Those other cards are in 17 sets. The other printings with a release date run from 2013 to 2026. The earliest other card is Greninja-EX XY20/211 in XY Black Star Promos (2013). That card is named Greninja-EX, while this one is Greninja. That card lists 170 HP, and this one lists 130 HP. The rarity there is Promo, and here it is Rare Holo. 33 other cards of Greninja list a different HP.
Water Shuriken is listed as Ability. Once during your turn (before your attack), you may discard a Water Energy card from your hand. If you do, put 3 damage counters on 1 of your opponent's Pokémon. The attack Mist Slash lists 50 damage. The cost is Water. This attack's damage isn't affected by Weakness, Resistance, or any other effects on your opponent's Active Pokémon. Weakness is Grass ×2. Retreat cost is 1. The flavor text reads "It creates throwing stars out of compressed water. When it spins them and throws them at high speed, these stars can split metal in two."
I keep a set binder for XY, meant to hold every card of that set. This card is one slot in the XY set binder. A generation binder holds one card of each species. Greninja can fill a slot in Generation 6 binder (Kalos). I still need this card.
Once during your turn (before your attack), you may discard a Water Energy card from your hand. If you do, put 3 damage counters on 1 of your opponent's Pokémon.
This attack's damage isn't affected by Weakness, Resistance, or any other effects on your opponent's Active Pokémon.
It creates throwing stars out of compressed water. When it spins them and throws them at high speed, these stars can split metal in two.
XY, in the XY series. It was released on February 5, 2014. The printed size is 146.
41/146. It is entry 41 of 146 in this checklist.
5ban Graphics. The catalog lists 1,629 other cards with that illustrator.
Rare Holo.
Greninja #658, generation 6 (Kalos).
Mist Slash (50).