To me its somewhat fair since it doesnt stop opponents who are on a self mill plan - unlike Rest in Peace, for example
Many creatures have a "party creature type" almost coincidently tacked onto them, too, so the deck gets to play some generally powerful creatures that overlap with the strategy
Skittering Cicada is the insect version of that, and it works wonders in decks like Ulalek, Fused Atrocity that benefit from creatures entering at instant speed
Odds are you are going to get something more damaging from the randoms even with less information
It's a cheap card, and if you block with the tokens it gave you, then it has enough rampage that you can still smash over them and kill them all
But you harness it by paying seven mana which exiles a creature you control