Card-Forge/forge

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An unofficial rules engine for the world's greatest card game.

Stars: 2.7k
Forks: 1.1k
Open beginner issues: 0
Indexed issues: 489
Avg merge: 1d 1h
Merged PRs (30d): 163

Dominant language: Java
License: GPL-3.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

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488 open issues indexed

Breaking Wave and Sands of Time update Open

keep Low priority Rules compliance

Card-Forge/forge#4110 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't resolve Glimpse of Tomorrow from cascade Open

AI keep

Card-Forge/forge#4113 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI uses Arbor Elf incorrectly Open

AI keep

Card-Forge/forge#4116 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI casts some spells only as a removal but they're used in a different way Open

AI keep

Card-Forge/forge#4118 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI casts Persist on Orcish Bowmasters Open

AI keep

Card-Forge/forge#4122 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI casts Underworld Breach for no reason Open

AI keep

Card-Forge/forge#4124 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI finds creatures with 6+ toughness more dangerous than Doran, the Siege Tower Open

AI keep

Card-Forge/forge#4129 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI casts second Inquisition of Kozilek to irrelevant hand Open

AI keep

Card-Forge/forge#4130 · 4 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI uses second ability of Wrenn and Six too often Open

AI keep

Card-Forge/forge#4131 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Linux home directory "dotfile" pollution Open

GUI keep

Card-Forge/forge#4133 · 9 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Commander doesn't clear perpetual effects when returning to command zone Open

Alchemy Game Mechanics keep Rules compliance

Card-Forge/forge#4135 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI ignores player's Ratchet Bomb / The Filigree Sylex Open

AI keep

Card-Forge/forge#4152 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Autopay ignoring treasures and opting to sacrifice creatures instead Open

AI keep

Card-Forge/forge#4154 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI doesn't cast another The One Ring to get rid of burden counters Open

AI keep

Card-Forge/forge#4162 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI doesn't use ability of Agatha's Soul Cauldron in response to Unearth Open

AI keep

Card-Forge/forge#4169 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI would rather kill Serrated Scorpion than Zulaport Cutthroat/Blood Artist Open

AI keep

Card-Forge/forge#4171 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Prevent undoing mana abilities after replacement effect Open

GUI keep Low priority

Card-Forge/forge#4179 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI isn't properly interacting with the player's Oath of Nissa Open

AI keep

Card-Forge/forge#4193 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Craft-related AI issues Open

AI keep Upcoming Set

Card-Forge/forge#4206 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AI kills its creature or damages itself by suspended Rift Bolt/triggers of Valakut if player and its creatures have hexproof/protection Open

AI keep

Card-Forge/forge#4208 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI keeps a hand with no lands but with spells with 0 cmc or with only phyrexian mana Open

AI keep

Card-Forge/forge#4209 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't cast Violent Outburst without attacking creatures Open

AI keep

Card-Forge/forge#4210 · 4 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI very rarely casts Collected Company Open

AI keep

Card-Forge/forge#4215 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI finds Birds of Paradise more dangerous than Elvish Piper/Champion of Rhonas Open

AI keep

Card-Forge/forge#4225 · 5 comments · 1 reaction · 1 assignee · Indexed Sep 15, 2026
AI evokes Grief when player has hexproof Open

AI keep

Card-Forge/forge#4233 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI ignores "for each". Open

AI BUG keep

Card-Forge/forge#4242 · 10 comments · 0 reactions · 3 assignees · Indexed Sep 15, 2026
AI choose a wrong card to name with Pithing Needle Open

AI keep

Card-Forge/forge#4260 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't cast cards with "Activated abilities of sources with the chosen name can’t be activated" Open

AI Game Mechanics keep

Card-Forge/forge#4261 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI attacks player with protection from creatures Open

AI Game Mechanics keep

Card-Forge/forge#4264 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't leave creatures to block/doesn't take into account player's Noble Hierarch effect Open

AI keep

Card-Forge/forge#4265 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Prompt cleanup – make noun pluralization also dynamic Open

keep Low priority

Card-Forge/forge#4268 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Urza Academy Headmaster Freezes AI Open

AI keep Un-Cards

Card-Forge/forge#4275 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI casts Up the Beanstalk after spells with mana value 5 or greater Open

AI keep

Card-Forge/forge#4278 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't cast Solitary Confinement/Forge Anew/Springleaf Drum, but it uses them more or less skillfully Open

AI keep

Card-Forge/forge#4279 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI activates ability of Elvish Piper at it's turn Open

AI keep

Card-Forge/forge#4280 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI searches for itself/discards to player cards with high cmc in early game Open

AI keep

Card-Forge/forge#4282 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Information issue with Zndrsplt's Judgment Open

GUI keep

Card-Forge/forge#4289 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI casts Preordain with Teferi, Time Raveler in player's upkeep Open

AI keep

Card-Forge/forge#4299 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI gains control of player's Pithing Needle Open

AI keep

Card-Forge/forge#4300 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI activates abilities of creatures/lands to to give them the ability to block but doesn't block with them Open

AI keep

Card-Forge/forge#4301 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't cast Unmoored Ego Open

AI keep

Card-Forge/forge#4302 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI declared tokens when playing Pithing Needle. Open

AI BUG keep

Card-Forge/forge#4321 · 2 comments · 0 reactions · 2 assignees · Indexed Sep 15, 2026
AI doesn't take into account abilities of Kaldra Compleat Open

AI keep

Card-Forge/forge#4324 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI casts Angel's Grace for non-lethal damage Open

AI keep

Card-Forge/forge#4325 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't play bounce lands if it has few lands on the battlefield Open

AI keep

Card-Forge/forge#4326 · 1 comment · 0 reactions · 2 assignees · Indexed Sep 15, 2026
AI doesn't exile creature cards from its graveyard by Agatha's Soul Cauldron Open

AI keep

Card-Forge/forge#4331 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI tries to find Walking Ballista by Chord of Calling Open

AI keep

Card-Forge/forge#4332 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI sacrifices Undercity Informer and targets player Open

AI keep

Card-Forge/forge#4348 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't cast Adventure Spells if it can cast main spells Open

AI keep

Card-Forge/forge#4352 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
AI doesn't suspend Restore Balance Open

AI keep

Card-Forge/forge#4359 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026

Card-Forge/forge

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