Catalyst Stone Proxy
Artifact · Odyssey · rare
$0.40/card in a full imported deck, $2.00 in rainbow foil. S33 German Black Core playtest card — not for sanctioned play.
Real-card format legality
Proxies themselves are never sanctioned-legal — this is the real card's status, useful for Rule-0 talks. Proxy legality, explained
Frequently asked
How much does a real Catalyst Stone cost?
Around $9.62 on the open market for the Odyssey printing (price snapshot 2026-07-21; live prices move daily).
How much does a Catalyst Stone proxy cost?
$0.50 as a single on an 18-card sheet, $0.40 when it's part of a full imported deck, or $2.00 in rainbow foil — all on S33 German Black Core cardstock, shipped from New York.
Can I play a Catalyst Stone proxy?
As a playtest card, yes — in casual Commander pods, kitchen-table games, and proxy-friendly events, with your playgroup's OK. Proxies are not legal in sanctioned tournaments, and we print them for personal, non-sanctioned play only.