Also, players gain hexproof too so you can save yourself from being targeted by foes, and no one can lose life or win/lose the game either
Players should pick Dungeon Delver if building in the UB archetype, a Background Enchantment that gives your commander the ability to trigger room abilities in the dungeon for an additional time
Grim Flayers ability gives you a scry 3 that also turns on delirium a high percentage of the time
Black doesn't have many of these, but cards like M.O.D.O.K., Evil Intellect, Gixian Puppeteer, and Construct a Cosmic Cube all pair nicely with a Night's Whisper
Because you get to choose the amount of Energy you pay, its really not difficult to make the Aetherkite decimate your opponents while leaving you relatively unscathed
It also has a beautiful Showcase and Fracture Foil print that are highly sought-after, much like most of the other Showcase prints in the release