AttackWater Vein
Reveal the top 5 cards of your deck. Flip a coin for each Energy card you find there. This attack does 50 damage times the number of heads. Shuffle the revealed cards back into your deck.

Octillery is Pokédex #224, generation 2 (Johto). Octillery is a Stage 1 Water Pokémon with 90 HP. The card lists level 40. The card says it evolves from Remoraid. In this catalog that name is Remoraid (#223).
Octillery sits at 58/127 in Platinum, position 58 of 133. Before it is 57 Muk, and after it is 59 Prinplup. The set belongs to the Platinum series. It was released on 11 February 2009. The printed size is 127. This checklist is longer, at 133 cards. The listed rarity is Uncommon.
The attack Water Vein lists 50× damage. Reveal the top 5 cards of your deck. Flip a coin for each Energy card you find there. This attack does 50 damage times the number of heads. Shuffle the revealed cards back into your deck. Octazooka is another attack lists 40 damage. The cost is Water, Water. Any time the Defending Pokémon tries to attack, your opponent flips a coin. If tails, that attack does nothing. (If the Defending Pokémon is no longer your opponent's Active Pokémon, this effect ends.) Weakness is Lightning +20. Retreat cost is 2. The flavor text reads "It loves to lurk inside holes in rocks. It sometimes sprays ink on prey by sticking out only its mouth."
Octillery (#224) has 18 other cards in the catalog. Those other cards are in 16 sets. The other printings with a release date run from 2001 to 2026. The earliest other card is Octillery 34/64 in Neo Revelation (2001). That card lists 80 HP, and this one lists 90 HP. Both list the rarity Uncommon. Tomokazu Komiya illustrated that card, and Midori Harada illustrated this one. 16 other cards of Octillery list a different HP.
The illustrator line reads Midori Harada. I count 352 other cards in the catalog with that illustrator.
Platinum set binder is where a full Platinum set goes. This card fills one slot there. A generation binder holds one card of each species. Octillery can fill a slot in Generation 2 binder (Johto). I still need this card.
Reveal the top 5 cards of your deck. Flip a coin for each Energy card you find there. This attack does 50 damage times the number of heads. Shuffle the revealed cards back into your deck.
Any time the Defending Pokémon tries to attack, your opponent flips a coin. If tails, that attack does nothing. (If the Defending Pokémon is no longer your opponent's Active Pokémon, this effect ends.)
It loves to lurk inside holes in rocks. It sometimes sprays ink on prey by sticking out only its mouth.
Platinum, in the Platinum series. It was released on 11 February 2009. The printed size is 127.
58/127. It is entry 58 of 133 in this checklist.
Midori Harada. The catalog lists 352 other cards with that illustrator.
Uncommon.
Octillery #224, generation 2 (Johto).
Water Vein (50×) and Octazooka (40).