Magikarp & Wailord GX SM166
Pokemon card from SM Black Star Promos · released Feb 3, 2017
Magikarp & Wailord GX is a Promo Water-type Pokemon card, number SM166 in SM Black Star Promos (released Feb 3, 2017), illustrated by Mitsuhiro Arita. Its TCGplayer market price was ~$188.63 for the holofoil finish on Oct 30, 2026. Between Oct 1 and Oct 30, 2026, its Holofoil TCGplayer market price went from ~$174.49 to ~$188.63, up 8.1%.
Prices by finish
| Finish | PriceMarket price | Low | Mid | Buy |
|---|---|---|---|---|
| Holofoil | ~$188.63 | ~$90.00 | ~$192.38 | CardNexuseBayBuy 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 | SM Black Star Promos |
| Number | SM166 |
| Rarity | Promo |
| Type | Water |
| HP | 300 |
| Artist | Mitsuhiro Arita |
| Format legality | Expanded |
| Finishes | Holofoil |
What the codes mean
- Card numberSM166A Black Star Promo number. Promos are numbered in their own series, with no set total.
- Set symbol
The small SM Black Star Promos 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.
- RarityPromo: the Black Star Promo symbol.
- Illustrator“Illus. Mitsuhiro Arita” names the artist who made the art.
Attacks & abilities
Super Splash180
Towering Splash GX10If this Pokémon has at least 7 extra Water Energy attached to it (in addition to this attack’s cost), this attack does 100 damage to each of your opponent’s Benched Pokémon. (Don’t apply Weakness and Resistance for Benched Pokémon.) (You can’t use more than 1 GX attack in a game.)
Weakness: Grass ×2 · Retreat cost: 4
Other Magikarp & Wailord GX printings
More SM Black Star Promos cards
All Magikarp cards · All Wailord cards · SM Black Star Promos price list
Card data via TCGdex and pokemontcg.io, updated Oct 30, 2026. Prices: TCGplayer market prices via TCGCSV, Oct 30, 2026.