As a general rule we try to implement as many cards on Xmage as we can; however, we deem some cards very unlikely or impossible to implement.

Unless otherwise indicated, asterisks indicate silver-bordered cards.

Very unlikely

Theoretically these could be implemented, but the technical hurdles are substantial.

"Mutate" cards

• ~40 cards with Mutate ability due game engine limitation

"Artist/Art/Expansion symbol matters" cards

All cards in this list are silver-bordered.

• Aesthetic Consultation
• Brushstroke Paintermage
• Bursting Beebles
• Drawn Together
• Erase (Not the Urza's Legacy One)
• Framed!
• Garbage Elemental (e)
• Goblin Haberdasher
• Graphic Violence
• Greater Morphling
• Ineffable Blessing (b)
• Mana Flair
• Our Market Research Shows That Players Like Really Long Card Names So We Made this Card to Have the Absolute Longest Card Name Ever Elemental
• Remodel
• Selfie Preservation
• Sly Spy (b)
• Sly Spy (d)
• Squirrel Farm
• Symbol Status
• World-Bottling Kit
• Zombie Fanboy

Contraptions

All cards in this list are silver-bordered.

• Cards with the Contraption artifact type
• Aerial Toastmaster
• Chipper Chopper
• Cogmentor
• Crafty Octopus
• Finders, Keepers
• First Pick
• Garbage Elemental (b)
• Incite Insight
• Joyride Rigger
• Midlife Upgrade
• Overt Operative
• Riveting Rigger
• Spell Suck
• Steady-Handed Mook
• Steamflogger Boss
• Steamflogger of the Month
• Steamflogger Service Rep
• Steamflogger Temp
• Steamfloggery
• Suspicious Nanny
• Very Cryptic Command (a)
• Work a Double
• Wrench-Rigger

"Draft matters" cards

• Aether Searcher
• Agent of Acquisitions
• Animus of Predation
• Arcane Savant
• Archdemon of Paliano
• Caller of the Untamed
• Canal Dredger
• Cogwork Grinder
• Cogwork Librarian
• Cogwork Spy
• Cogwork Tracker
• Custodi Peacekeeper
• Deal Broker
• Garbage Fire
• Illusionary Informant
• Leovold's Operative
• Lore Seeker
• Lurking Automaton
• Noble Banneret
• Paliano, the High City
• Palace Vanguard
• Pyretic Hunter
• Regicide
• Smuggler Captain
• Spire Phantasm
• Volatile Chimera
• Whispergear Sneak

Subgames

• Enter the Dungeon*
• Shahrazad
• The Countdown Is at One*

Text-changing effects

• Alter Reality
• Artificial Evolution
• Balduvian Shaman
• Crystal Spray
• Glamerdye
• Magical Hack
• Magical Hacker*
• Mind Bend
• New Blood
• Sleight of Mind
• Spectral Shift
• Swirl the Mists
• Trait Doctoring
• Very Cryptic Command (f)*
• Whim of Volrath

Miscellaneous

• Who // What // When // Where // Why
• Spy Kit (see combo with Cornered Market)

Impossible

These cards all involve things that don't exist in the abstracted environment of a simulator.

Cards that track what people are/do/have/say

All cards in this list are silver-bordered.

• Avatar of Me
• Bureaucracy
• Cardboard Carapace
• Cardpecker
• Censorship
• Collector Protector
• Creature Guy
• Deal Damage
• Hurloon Wrangler
• Keeper of the Sacred Word
• Kill! Destroy!
• Ladies' Knight
• Laughing Hyena
• Name Dropping
• Number Crunch
• Prismatic Wardrobe
• Save Life
• Sex Appeal
• Sorry
• Spell Counter
• Stop That
• Touch and Go

Dexterity effects

• Chaos Orb
• Chaos Confetti*
• Falling Star
• Landfill*
• Orcish Paratroopers*
• Slaying Mantis*

People from outside the game

All cards in this list are silver-bordered.

• Better Than One
• Defective Detective
• It That Gets Left Hanging
• Kindslaver
• Sacrifice Play
• Squirrel Dealer
• Subcontract