Mega Diancie ex is card #41 of 94 in Phantasmal Flames (2025), a Double Rare illustrated by aky CG Works. At about $0.54 it is the #43 most valuable card in the set. In a Phantasmal Flames booster it turns up about once every 54 packs. It is one of 15 Diancie cards printed so far.
2013XY Black Star Promos
2016Fates Collide
2017Burning Shadows
2019Hidden Fates Shiny Vault
2020Vivid Voltage
2023Crown Zenith Galarian Gallery
2024Stellar Crown
2025Phantasmal Flames

















See the full Phantasmal Flames card list
An ungraded Mega Diancie ex from Phantasmal Flames sells for about $0.54. A PSA 10 is worth more, roughly $1.89 by our estimate, and a PSA 9 around $1.08.
It is a Double Rare, and it shows up about once every 54 Phantasmal Flames packs.
aky CG Works drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Phantasmal Flames 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.