The idea of a moldering gym in a horror house is delightfully creepy
Jace, the Mind Sculptor [Best Control Planeswalker of All Time] The best planeswalkers in MTG history always start with Jace, the Mind Sculptor
Along with that, she has a willpower of six and, at a cost of five, it means that most cards around that level will have a hard time getting rid of her
Ideally, you should have something that covers one-shot artifact hate (Relic of Progenitus, Tormods Crypt, etc.), the interaction thats hidden in the opponents hand (Endurance, countermagic, etc.), other problematic permanents (Dauthi Voidwalker, Sanctifier en -Vec), and sometimes enchantment with static abilities (Leyline of the Void or Rest in Peace)
Wizards of the Coast, however, managed to make use of the virtual space, allowing players to continue their hobbies without having to meet face to face
Activate only if you control three or more artifacts