# Amoonguss #13/114 — Steam Siege

## Summary

Amoonguss is a Gen V Grass-Poison that earned a cult following for sitting in a Poké Ball disguise, and its status-lock attacks fit that deceptive reputation. A mid-tier Rare in Steam Siege, it draws Sugimori completists, since the original Pokémon designer rarely illustrates new cards. A $0.28 modelled guide, flat over 30 days on 6 copies traded, says bulk, with 150 days of inventory on the board, and the economics stop there: a PSA 10 guides at $32, 113 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 | 13/114 |
| Rarity | Rare |
| Era | XY |
| Illustrator | Ken Sugimori |
| Release date | 2016-08-03 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | POKEMON |
| Stage | Stage1 |
| Evolves from | Foongus |
| HP | 90 |
| Types | Grass |
| Attack: Crazy Spore | cost Colorless — Your opponent's Active Pokémon is now Confused and Poisoned. |
| Attack: Strange Reaction | cost Grass/Colorless — damage 30 — If your opponent's Active Pokémon is Confused, it is now Paralyzed. |
| Weakness | Fire ×2 |
| Retreat | 2 |
| Legal | Standard no · Expanded yes |
| Pokédex entry | [Amoonguss #591](https://cardboardalpha.com/pokemon/pokedex/amoonguss) |
| Finishes | Normal, Reverse Holo |
| Languages | EN |

## Current stats

- Headline price: **$0.28** (ITEM_MEDIAN; modelled guide price) — as of 2026-11-06
- 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 2026-11-06
- Floor delivered ask: $1.25 — as of 2026-10-18T22:02:16.184Z
- Quant score: 26/100, regime ILLIQUID_UNKNOWN — as of 2026-11-03T06:53:04.031Z — 4 of 11 inputs · 46% weight · -27% 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 2026-11-06T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-10-19T16:52:25.767Z, confidence 90%
- Confirmed sale — observed 2026-10-18T03:20:01.330Z, confidence 85%
- Inventory count — observed 2026-10-19T16:52:25.767Z, confidence 70%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/steam-siege/amoonguss-13)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Axy11-13%3AEN%3ANORMAL~NM)