Cloyster 42/165
Pokemon card from Expedition Base Set · released Sep 15, 2002
Cloyster is a Rare Water-type Stage 1 Pokemon card, number 42/165 in Expedition Base Set (released Sep 15, 2002), illustrated by Kyoko Umemoto. Its TCGplayer market price was ~$45.03 for the reverse holofoil finish on Oct 30, 2026. Between Oct 1 and Oct 30, 2026, its Reverse Holofoil TCGplayer market price went from ~$40.82 to ~$45.03, up 10.3%.
Prices by finish
| Finish | PriceMarket price | Low | Mid | Buy |
|---|---|---|---|---|
| Normal | ~$18.90 | ~$16.10 | ~$20.88 | CardNexuseBayBuy Normal on TCGplayer (opens in a new tab)Search eBaySearch AmazonCardNexus |
| Reverse Holofoil | ~$45.03 | ~$30.79 | ~$199.99 | CardNexuseBayBuy Reverse Holofoil on TCGplayer (opens in a new tab)Search eBaySearch AmazonCardNexus |
TCGplayer market prices per finish, as of Oct 30, 2026. A guide, not an appraisal; condition and grading change real-world value. Buy links are affiliate links.
Graded copies on eBay
Graded prices vary a lot by grade. These links search current listings.
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Card details
| Set | Expedition Base Set |
| Number | 42/165 |
| Rarity | Rare |
| Type | Water |
| HP | 80 |
| Stage | Stage 1 — evolves from Shellder |
| Artist | Kyoko Umemoto |
| Format legality | Not legal in Standard or Expanded |
| Finishes | Normal · Reverse Holofoil |
What the codes mean
- Card number42/165Card 42 of the 165 in the main Expedition Base Set list.
- Set symbol
The small Expedition Base Set symbol identifies the set. Cards from before Scarlet & Violet print a symbol instead of a set code. - Regulation markNo regulation mark. Cards before Sword & Shield (2020) have none.
- RarityRare: a black star.
- Illustrator“Illus. Kyoko Umemoto” names the artist who made the art.
Attacks & abilities
Lick10Flip a coin. If heads, the Defending Pokémon is now Paralyzed.
Auto Fire20×Flip 4 coins. This attack does 20 damage times the number of heads.
Weakness: Metal x2 · Retreat cost: 2
Other Cloyster printings
More Expedition Base Set cards
All Cloyster cards · Expedition Base Set price list
Card data via TCGdex and pokemontcg.io, updated Oct 31, 2026. Prices: TCGplayer market prices via TCGCSV, Oct 30, 2026.