# Rillaboom (Japanese) #008 — S6K: Jet-Black Spirit

## Summary

A plain Rare in Japanese Jet-Black Spirit, Rillaboom sits in the middle of the pack: a solid pull rather than a chase slot, and that suits a Grass Stage 2 with a Rapid Strike tag that was built for play more than for display. The green burst of drumming action and swirling energy makes it a lively binder card. Japan received it in April 2021, ahead of the English Chilling Reign release in June. A $0.68 modelled guide with no copies traded in 30 days says bulk, and the economics stop there: no PSA population is on file, and a PSA 10 would fetch about $25 against $65 in grading fees, so the only money in this card is finishing a set, not a slab.

## Identity

| Field | Value |
| --- | --- |
| Set | S6K: Jet-Black Spirit |
| Language | Japanese |
| Number | 008 |
| Rarity | Rare |
| Era | jp-swsh |
| Illustrator | Unknown |
| Release date | 2021-04-23 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | POKEMON |
| Finishes | Holo |
| Languages | JA |

## Current stats

- Headline price: **$0.68** (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: $1.69 — as of 2026-11-06T21:06:39.451Z
- Quant score: 50/100, regime ILLIQUID_UNKNOWN — as of 2026-11-06T21:06:39.451Z — 2 of 11 inputs · 20% weight · -35% confidence

## Provenance

- Catalog — observed 2021-04-23T00:00:00Z, confidence 98%
- Live ask — observed 2026-09-28T23:43:45.754Z, confidence 90%
- Guide price (modelled) — observed 2026-11-07T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-09-28T23:43:45.755Z, confidence 90%
- Confirmed sale — observed 2026-09-22T06:50:19.870Z, confidence 85%
- Inventory count — observed 2026-09-28T23:43:45.754Z, confidence 70%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon-japan/s6k-jet-black-spirit/rillaboom)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~pokemon-japan%3Ajp-23624-008%3AJA%3AHOLO~NM)