Memories and the mind at large are often associated with the library in Magic, leading us to Szadek, Lord of Secrets, a Dimir commander that devours opposing libraries
Simic Ascendency is just so good
Accordingly, the color pair (and to some extent, the format as a whole) is less about forcing rigid archetypes with strong synergies, meaning point (2) of our criteria is harder to achieve
For that reason, this list will only consider the cheapest copy of each Common card available
Shambling Cie'th's ability resolves before the spell that caused it to trigger
Every deck needs mass removal, even a budget one like this, so I tossed in Terror Tide