🧪 Cauldron Lab · not open yet

The Arena — playing a game against the AI — is open, and it is the tab next door. The Lab is the other half of Cauldron, and it is not running on this server.

What the Lab does

Cauldron is a Magic: the Gathering rules engine whose only product is information about decks. The Arena lets you play one game. The Lab answers the questions one game cannot, by simulating thousands:

Consistency — goldfish a deck over and over. Does it actually do its thing on curve, or did it just do it that one time you drew well?
Matchups — run full four-player pods with an AI on every seat and tally who beats whom.

Why it is off here

Each of those runs is hundreds of complete games of Magic. That is a real amount of compute, and this site is one machine — so the Lab is switched off on the public deploy rather than left open for anyone to point at it. It is not gone; it runs locally, and this is a capacity decision, not a permanent one.

Tell me when it opens

Stored as a plain line in a file on this machine, used once to tell you the Lab is up, and shared with nobody. No list, no tracking, no other mail.

In the meantime, the Arena is open — pick a deck and play a pod.