Xerneas is card #81 of 114 in Steam Siege (2016), a Rare Holo illustrated by Megumi Mizutani. At about $0.91 it is the #37 most valuable card in the set. In a Steam Siege booster it turns up about once every 33 packs. It is one of 24 Xerneas cards printed so far.
2013XY Black Star Promos
2015BREAKthrough
2016Steam Siege
2018Forbidden Light
2020Vivid Voltage
2023Scarlet & Violet Black Star Promos
2024Surging Sparks
2026Chaos Rising

















See the full Steam Siege card list
An ungraded Xerneas from Steam Siege sells for about $0.91. A PSA 10 is worth more, roughly $4.55 by our estimate, and a PSA 9 around $2.09.
It is a Rare Holo, and it shows up about once every 33 Steam Siege packs.
Megumi Mizutani drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Steam Siege 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.