While its restriction to only collecting low-power creatures can be awkward, you'd typically include Kiki-Jiki, Mirror Breaker alongside Imperial Recruiter, to trigger Recruiter's ability many more times
The most common and likely most powerful version is some blend of the Dimir and Rakdos example decks here
Additionally, all of the Kaladesh test prints have the same artist, "Mollusca Bivalvia", which is neither the artist for the actual card art, nor even a person that actually exists
First up, it has the very unique myriad mechanic, which creates copies of itself for each opponent you have when it attacks
Can you Stifle a Morph
This is especially easy for the lands, as they are completely identical to the originals aside from the new artwork