Rillaboom
Chilling Reign · 18/233 · Holo Rare
$0.26 Near Mint market price (TCGplayer).
Rillaboom is card 18 of 233 in the Chilling Reign set, released in June 2021. Its rarity is Holo Rare. The artwork is by Hitoshi Ariga. Rillaboom has also been printed in 8 other sets, so check the set and number to compare like with like.