Rillaboom is card #18 of 198 in Chilling Reign (2021), a Rare Holo illustrated by Hitoshi Ariga. At about $0.26 it is the #167 most valuable card in the set. In a Chilling Reign booster it turns up about once every 106 packs. It is one of 18 Rillaboom cards printed so far.


















See the full Chilling Reign card list
An ungraded Rillaboom from Chilling Reign sells for about $0.26. A PSA 10 is worth more, roughly $0.91 by our estimate, and a PSA 9 around $0.52.
It is a Rare Holo, and it shows up about once every 106 Chilling Reign packs.
Hitoshi Ariga drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Chilling Reign 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.