Rillaboom is card #SWSH006 of 307 in SWSH Black Star Promos (2019), a Promo illustrated by Kouki Saitou. At about $5.80 it is the #105 most valuable card in the set. It is one of 18 Rillaboom cards printed so far.


















See the full SWSH Black Star Promos card list
An ungraded Rillaboom from SWSH Black Star Promos sells for about $5.80. A PSA 10 is worth more, roughly $29.00 by our estimate, and a PSA 9 around $13.34.
It is a Promo.
Kouki Saitou drew the art for this card.