Southside Studio & Hobbies Presents
Arbiter
Your AI-powered rules judge. Ask a question, get a ruling. No app download required — live right now on Discord.
Southside Studio & Hobbies Presents
Your AI-powered rules judge. Ask a question, get a ruling. No app download required — live right now on Discord.
Arbiter is an AI-powered rules assistant and game judge built specifically for tabletop gaming. It knows the rules of every game it supports — rules interactions, edge cases, deck legality, and all — and gives you fast, accurate answers in plain English.
Whether you're mid-game disputing a triggered ability, building your next commander deck, or trying to figure out if your Warmachine list is legal before a tournament, Arbiter has the answer. No searching through PDFs. No waiting for a judge. Just ask.
Arbiter lives in Discord. No download. No account. Just @mention it and type your question.
Get instant rulings on any rule in the game — combat, timing, zones, special abilities, and everything in between.
Does this card combo work? Does this warcaster ability affect that model? Arbiter resolves it with accurate rules context.
Paste your decklist or army list and get targeted feedback — synergy analysis, swap suggestions, and format legality checks.
Tell Arbiter what you want to play and it'll build you a format-legal list from the ground up, with strategic reasoning included.
Three steps. Zero friction.
Join the Southside Studio Discord and just @mention Arbiter. Type your question in plain English — no slash commands, no special syntax. Ask exactly like you'd ask a friend who knows the rules cold.
Arbiter automatically detects your game from context, looks up relevant rules and card data, and routes your question to the right expertise. Rules questions, deck reviews, interaction checks — it figures out what you need.
You get a clear, accurate response in seconds — with the reasoning included so you understand the ruling, not just the outcome. No waiting. No lookup fees. No download.
Four games. One assistant.
Full support across all constructed formats — Commander, Modern, Standard, Legacy, Pioneer, Pauper, and more. Arbiter knows the Comprehensive Rules, can look up live card data via Scryfall, and handles complex interaction rulings with precision.
10th Edition rules support including detachments, Stratagems, Core Rules, datasheets, and Combat Patrol. Arbiter handles rules disputes mid-game, reviews army lists for legality, and advises on detachment strategy and list optimisation.
MKIV rules support including warcasters, warlocks, warjacks, warbeasts, and Steamroller scenarios. Arbiter pulls live rules context directly from the Warmachine Academy wiki, so answers are grounded in current official documentation.
Cactus Game Design's Bible-themed CCG is now in testable alpha on Arbiter. Rules support is based on REG 8.3.1 and the 2024 Deck Building Rules, with live Fandom wiki lookups for card interactions. We want your feedback — test it and let us know.
Two ways to use Arbiter.
Join the Southside Studio & Hobbies Discord server and @mention Arbiter in any channel. No setup, no commands to memorize — just type your question and go. Free during the alpha.
Join the DiscordThe Arbiter mobile app is in development for Android and iOS. It will support everything the Discord bot does plus .txt decklist uploads from your device and offline-friendly access to your ruling history.
Coming Soon · Android & iOSArbiter is live right now. Join Discord and ask your first question for free.
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