As a bystander to the format, I can say that before Modern existed, the Extended formatwhich encompassed anywhere between the previous 4-7 years of Magicwas much maligned
However, for this particular article, I want to cover an Artifact Superfriends deck, and I don't think our deck gains much by going 5C
This is my actual, proper, Top Five card for Unstable
Getting rid of a token to exile three threats can turn a game in your favor
It goes down in value the more likely it is to get blocked, removed, or even worse traded off in a double block for a single Tarmogoyf or something
Echoing Decay is a simple little common that is functional as a removal spell (although occasionally awesome against your opponent's best draws), but has one real purpose - exterminate all of your opponent's small creature tokens