Flip a coin. If heads, your opponent's Active Pokémon is now Paralyzed.
During your opponent's next turn, this Pokémon takes 100 less damage from attacks (after applying Weakness and Resistance). (You can't use more than 1 GX attack in a game.)
Release year for Hidden Fates is 2019. It belongs to the Sun & Moon series.
Set size is 69 cards, which categorizes Hidden Fates as compact. As of 2026, the set is 7 years old and now falls into an established back-catalog period.
Within this set, Onix-GX is card number 36 with a Rare Holo GX designation.
In 2019, Hidden Fates introduced this print of Onix-GX. Its card type is Pokémon.
The rarity label is Rare Holo GX. Printed HP is 200.
Energy typing is Fighting. Card subtype classification is Basic and GX.
The card text reads: Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards. Notable move text references "Bind", "Heavy Impact", and "Rocky Avalanche-GX".
For Onix-GX in Hidden Fates, the current reference price is $2.41. Week-over-week change is limited (+1.7%), indicating short-term stability.
Current value is elevated versus the 30-day mean ($2.28), by 5.8%. The 90-day window shows a floor near $1.87 and a peak around $2.51 (27% total spread), which maps to moderate-volatility movement.
Rarity classification for this copy is Rare Holo GX.
Pricing context for collectors: Short-term movement is stable (+1.7% over 7 days), with price action clustered near recent averages. With a 27% 90-day spread ($1.87-$2.51), this card currently tracks as moderate-volatility.
Current value is 5.8% above its 30-day reference ($2.28). Graded context points to a substantial premium curve, with PSA 10 at +2627% above raw pricing.
PSA 9 is currently around $23.16, while PSA 10 is $65.71.