Officially sanctioned by Curiosa
Siege at the Core 2026 is the final European Grand Contest of the year, an international weekend that brings together players from across Europe and beyond.
The date is 100% locked in. No changes this year.
The Weekend
Friday
December 4
Open the weekend with a fast-paced Booster Draft across Beta, Arthurian Legends and Gothic. Crack packs, build a deck on the spot, and play it out.
Saturday
December 5
The main event. Bring your sharpest constructed deck to play for the Grand Contest top prizes.
Sunday
December 6
Close the weekend with a fresh sealed event, six packs from Beta, Arthurian Legends and Gothic. New pools, new chances at the spoils.
New this season
The new Frost Mage vs Lavamancer set launches on November 13, 2026, with a fresh batch of cards.
Siege at the Core 2026 is the first European Grand Contest where these cards are tournament-legal, so expect them to shake up constructed and reshape the top decks.
The Venue
The same red-brick industrial landmark that hosted our previous two editions of Siege at the Core. Tall arched windows, a bright tournament floor, just minutes from Brussels Airport.
55 Fabrieksstraat
1930 Zaventem
Belgium
Stay in the Know
Registration is open. Want updates on artists, prizes and the schedule too? Leave your email and we'll keep you posted.
Look Back
Last year's tournament weekend, the kind of room we're building for this December.
Prizes
Every sanctioned Grand Contest receives the same prize kit from Curiosa, including:
Shiny silver bullet
For the top finalists of the weekend.
Cranky Overseer foils
Awarded to the event judges.
Swap foils
For the community champions of the tournament.
Croaking Swamp promos
Participation reward for every attendee.
Silver bullet promos
Additional participation rewards across the field.
Featured Artists
As with previous editions, we're bringing in Sorcery artists for signings, sketches, and conversations throughout the weekend. Confirmations will follow in the coming weeks.
All Siege at the Core updates land on Discord first: registration windows, side events, travel tips, artist line-up.
Join our DiscordGet Involved
An event of this size only works with the people behind it. If you want to be part of making the weekend run, we'd love to hear from you.
Help us run clean rounds on the floor - rules questions, deck checks, calls.
Bring your brand to one of the year's most visible European Sorcery moments.
Welcome players, run side events, lend a hand at registration, set up and tear down.
Tell us which role suits you and we'll get back with details.