# Yanmega #7/114 — Steam Siege

## Summary

Yanmega is a Sinnoh-born bug with a modest but steady following, and its Sonic Vision ability made it a genuine tech option in Steam Siege-era decks that could hold a four-card hand. Midori Harada is a familiar illustrator name to set completionists, and a plain Rare sits mid-tier, so demand stays quiet. A $0.21 modelled guide with 4 copies traded in 30 days says bulk, and the economics stop there: a PSA 10 guides at $33, 158 times raw, but PSA does not split this card’s population by finish, so no gem rate can be read for it.

## Identity

| Field | Value |
| --- | --- |
| Set | Steam Siege |
| Number | 7/114 |
| Rarity | Rare |
| Era | XY |
| Illustrator | Midori Harada |
| Release date | 2016-08-03 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | POKEMON |
| Stage | Stage1 |
| Evolves from | Yanma |
| HP | 110 |
| Types | Grass |
| Ability: Sonic Vision | If you have exactly 4 cards in your hand, ignore all Energy in the attack cost of each of this Pokémon's attacks. |
| Attack: Assault Boom | cost Colorless/Colorless/Colorless — damage 50+ — If your opponent's Active Pokémon has a Pokémon Tool card attached to it, this attack does 70 more damage. |
| Weakness | Lightning ×2 |
| Resistance | Fighting -20 |
| Retreat | 0 |
| Legal | Standard no · Expanded yes |
| Pokédex entry | [Yanmega #469](https://cardboardalpha.com/pokemon/pokedex/yanmega) |
| Finishes | Normal, Reverse Holo |
| Languages | EN |

## Current stats

- Headline price: **$0.21** (ITEM_MEDIAN; modelled guide price) — as of 2026-11-07
- Headline basis: MODELLED_GUIDE — The venue’s published daily market guide, which the venue itself declares MODELLED. Nothing is confirmed to have traded at it, no copy is listed at it, and it is not our estimate — it is theirs.
- 24h change: n/a · 7d change: n/a — as of 2026-11-07
- Floor delivered ask: $1.64 — as of 2026-11-07T23:47:55.260Z
- Quant score: 56/100, regime ILLIQUID_UNKNOWN — as of 2026-11-07T23:47:55.260Z — 3 of 11 inputs · 29% weight · -35% confidence

## Provenance

- Catalog — observed 2016-08-03T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-22T18:36:42.466Z, confidence 90%
- Guide price (modelled) — observed 2026-11-07T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-10-19T17:52:33.050Z, confidence 90%
- Confirmed sale — observed 2026-09-09T12:21:45.740Z, confidence 85%
- Inventory count — observed 2026-10-19T17:52:33.049Z, confidence 70%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/steam-siege/yanmega-7)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Axy11-7%3AEN%3ANORMAL~NM)