Tropical Tidal Wave #HGSS18

Pricing context for collectors: Over the last 7 days, prices have remained stable at 0.0%, indicating a consolidation phase over sudden breakouts. With a 0% 90-day spread ($599.95-$599.95), this card currently tracks as low-volatility.

Relative to the 30-day baseline ($599.95), pricing is near equilibrium. Top-grade copies show substantial separation from raw: PSA 10 is pricing +132% above the current raw benchmark.

PSA 9 is currently around $1100.48, while PSA 10 is $1393.17.

Tropical Tidal Wave from HGSS Black Star Promos is currently trading around $599.95. The 7-day delta remains near neutral at 0.0%.

Relative to the last 30 days, value is near baseline at $599.95. Across the past 90 days, tracked prices have stayed near $599.95 with minimal dispersion.

This version is categorized as Promo.

Tropical Tidal Wave is a HGSS Black Star Promos card from the 2010 release window. Its card type is Trainer.

The rarity label is Promo. It carries a Item subtype designation.

Card rules text: Flip a coin. If heads, discard all Trainer and Stadium cards your opponent has in play.

If tails, discard all Trainer and Stadium cards you have in play. Attack names are not present in the current metadata snapshot.

Release year for HGSS Black Star Promos is 2010. HGSS Black Star Promos is grouped under the HeartGold & SoulSilver era.

Set size is 25 cards, which categorizes HGSS Black Star Promos as compact. As of 2026, the set is 16 years old and fits a legacy-era profile.

Within this set, Tropical Tidal Wave is card number HGSS18 with a Promo designation.

Other Tropical printings create a useful comparison set for Tropical Tidal Wave. Comparable entries in this snapshot: 2 cards, 1 distinct set.

Comparable pricing data is limited in this sample, so set and rarity context should guide comparison. Notable alternatives include Tropical Tidal Wave #36 (Nintendo Black Star Promos) and Tropical Tidal Wave #27 (Nintendo Black Star Promos).