# Unit Energy GrassFireWater #170/156 — Ultra Prism

## Summary

Unit Energy GrassFireWater is a utility card dressed up as a trophy: it solved colour requirements for a trio of types in decks that wanted flexibility, then got shelved once rotation moved on. As a Secret Rare Energy, it sat deep in the set's chase tier, so scarcity does the work here. The modelled guide sits at $19; no PSA population is on file.

## Identity

| Field | Value |
| --- | --- |
| Set | Ultra Prism |
| Number | 170/156 |
| Rarity | Secret Rare |
| Era | SM |
| Illustrator | Unknown |
| Release date | 2018-02-02 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | ENERGY |
| Energy type | Special |
| Legal | Standard no · Expanded yes |
| Finishes | Normal |
| Languages | EN |

## Current stats

- Headline price: **$19.23** (ITEM_MEDIAN; modelled guide price) — as of 2026-10-23T06:45:23.748Z
- 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 2026-10-23T06:45:23.748Z
- Floor delivered ask: $19.99 — as of 2026-10-19T09:03:58.083Z
- Quant score: 25/100, regime ILLIQUID_UNKNOWN — as of 2026-10-23T06:45:23.748Z — 4 of 11 inputs · 36% weight · -32% confidence

## Provenance

- Catalog — observed 2018-02-02T00:00:00Z, confidence 98%
- Guide price (modelled) — observed 2026-10-23T00:00:00.000Z, confidence 90%
- Live ask — observed 2026-10-19T12:06:27.938Z, confidence 85%
- Inventory count — observed 2026-10-22T08:33:27.443Z, confidence 70%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/ultra-prism/unit-energy-grassfirewater-170)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Asm5-170%3AEN%3ANORMAL~NM)