The most prominent of these is Sword of the Paruns for a two-card infinite out of the command zone, though Staff of Domination works with a hair of effort
Redditor DerekPaxton commented that "Word of Command always seemed like the laziest art ever." It certainly is one of the simplest cards art-wise in the game, and the lone pair of eyes staring out from darkness doesn't necessarily give the feeling of a "word of command" either
Put together the most nefarious set of schemes you can, then battle it out to see whose plan reaches fruition
These are best used as soon as possible, as the early they're used, the more cards they will wind up milling
Historically, blue is the games strongest color, and artifacts are often the most broken permanent type
Necrotic Fumes, Academic Probation, and Containment Breach saw some play alongside Learn cards like Sparring Regimen and Eyetwitch, but there was one pairing that saw a lot of play: Divide by Zero and Mascot Exhibition