Holon's Castform is card #44 of 110 in Holon Phantoms (2006), a Uncommon illustrated by Mitsuhiro Arita. At about $22.09 it is the #76 most valuable card in the set. In a Holon Phantoms booster it turns up about once every 13 packs. It is one of 22 Castform cards printed so far.
2004Hidden Legends
2005Delta Species
2006Holon Phantoms
2008Legends Awakened
2017Guardians Rising
2021Chilling Reign
2022Brilliant Stars
2024Surging Sparks

















See the full Holon Phantoms card list
An ungraded Holon's Castform from Holon Phantoms sells for about $22.09. A PSA 10 is worth more, roughly $287 by our estimate, and a PSA 9 around $88.36.
It is a Uncommon, and it shows up about once every 13 Holon Phantoms packs.
Mitsuhiro Arita drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Holon Phantoms 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.