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
This can come at a very inopportune time if you've only got someone else's creatures to defend yourself against an opponent who is going off, and the owner of those creatures gets knocked out
And there are lots of Commander decks that want to do just that, with Wrenn and Seven providing a significant boost to both mana generation and filling your graveyard with useful creatures
This would literally be unflippable in some decks, or need the one copy of the alternative cost card like Fireblast or Treasure Cruise to be the final different CMC exiled thing
Each pack contains 15 Magic cards, and 1 foil token
The simple fact is that artifacts are used to flesh out the weaknesses of colors