Riolu is card #66 of 156 in Ultra Prism (2018), a Common illustrated by Kyoko Umemoto. At about $0.79 it is the #89 most valuable card in the set. In an Ultra Prism booster it turns up about once every 8 packs. It is one of 32 Riolu cards printed so far.
2007Diamond & Pearl
2009Platinum
2012Next Destinies
2016Fates Collide
2018Ultra Prism
2020Vivid Voltage
2024Paldean Fates
2026Ascended Heroes

















See the full Ultra Prism card list
An ungraded Riolu from Ultra Prism sells for about $0.79. A PSA 10 is worth more, roughly $3.95 by our estimate, and a PSA 9 around $1.82.
It is a Common, and it shows up about once every 8 Ultra Prism packs.
Kyoko Umemoto drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Ultra Prism booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.