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Decklist: WU Aura / Rooms Ethereal Armor deck in Standard Creature (20) Optimistic Scavenger x4 Inquisitive Glimmer x4 Fear of Impostors x2 Entity Tracker x3 Enduring Curiosity x2 Monastery Mentor x4 Overlord of the Floodpits Enchantment (17) Dollmaker's Shop // Porcelain Gallery x3 Grand Entryway // Elegant Rotunda x2 Bottomless Pool // Locker Room x3 Surgical Suite // Hospital Room x2 Combat Research x3 Ethereal Armor x4 Land (23) Adarkar Wastes x4 Floodfarm Verge x4 Seachrome Coast x4 Valgavoth's Lair x3 Island x4 Plains x4 Heres a Standard aggressive deck that uses eerie cards like Inquisitive Glimmer and Entity Tracker, coupled with some rooms that generate tempo and card advantage

Easily worth the six damage in a Ruric Thar, the Unbowed deck, if you ask me

I put my spin on a stock list to emphasize using 75% cards like Desertion, Aetherspouts, and Memory Plunder to trigger Nymris on their turn to draw us extra cards

Wizards provides the Commander Power Brackets and our tiers add a bit more nuance