I specifically like it because it offers an easy avenue to increase your speed: Since you can gain speed by making your opponents lose life, Blood Artist and its ilk get you there quickly
These two abilities actually work really well together, as the mana ability will give you the necessary resources to play the three cards you just exiled off the top of your library
Board builders & payoffs: Noosegraf Mob, Overseer of the Damned, Eternal Skylord, Gleaming Overseer, Vizier of the Scorpion, Army of the Damned
There are some pre-order options, though
In all seriousness, as much as it kills artifacts, Rambunctious Mutt is not great, but made for a similar blink target with let flexibility
The fact that Rooms don't appear at common rarity (according to MaRo) is raising further doubts about the strategy's consistency in draft