AttackRipple
Flip a coin. If heads, put 1 damage counter on each of your opponent's Pokémon.

Shellos is Pokédex #422, generation 4 (Sinnoh). Shellos East Sea is a Basic Water Pokémon with 60 HP. The card lists level 21. The card lists Gastrodon, Gastrodon (#423) under evolves to.
Shellos East Sea sits at 79/111 in Rising Rivals, position 79 of 120. Before it is 78 Seedot, and after it is 80 Shellos West Sea. The set belongs to the Platinum series. It was released on May 16, 2009. The printed size is 111. This checklist is longer, at 120 cards. The listed rarity is Common.
The attack Ripple lists no damage number. The cost is Colorless. Flip a coin. If heads, put 1 damage counter on each of your opponent's Pokémon. Brine is another attack lists no damage number. The cost is Water. Choose 1 of your opponent's Pokémon that has any damage counters on it. This attack does 20 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) Weakness is Grass +10. Retreat cost is 1. The flavor text reads "Beware of pushing strongly on its squishy body, as it makes a mysterious purple fluid ooze out."
Shellos (#422) has 8 other cards in the catalog. Those other cards are in 7 sets. The other printings with a release date run from 2007 to 2024. The earliest other card is Shellos East Sea 106/132 in Secret Wonders (2007). Both list 60 HP. Both list the rarity Common. Ken Sugimori illustrated that card, and Tomokazu Komiya illustrated this one. Retreat cost there is 2, and here it is 1. 4 other cards of Shellos list a different HP.
The illustrator line reads Tomokazu Komiya. I count 248 other cards in the catalog with that illustrator.
Rising Rivals set binder is where a full Rising Rivals set goes. This card fills one slot there. A generation binder holds one card of each species. Shellos can fill a slot in Generation 4 binder (Sinnoh). I still need this card.
Flip a coin. If heads, put 1 damage counter on each of your opponent's Pokémon.
Choose 1 of your opponent's Pokémon that has any damage counters on it. This attack does 20 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Beware of pushing strongly on its squishy body, as it makes a mysterious purple fluid ooze out.
Rising Rivals, in the Platinum series. It was released on May 16, 2009. The printed size is 111.
79/111. It is entry 79 of 120 in this checklist.
Tomokazu Komiya. The catalog lists 248 other cards with that illustrator.
Common.
Shellos #422, generation 4 (Sinnoh).
Ripple and Brine.