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
Released in the spring, Ikoria: Lair of Behemoths introduced the ability for players to combine cards together to create monsters using the mutate keyword
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
The fact that Rooms don't appear at common rarity (according to MaRo) is raising further doubts about the strategy's consistency in draft
In all seriousness, as much as it kills artifacts, Rambunctious Mutt is not great, but made for a similar blink target with let flexibility