Add in that each Innistrad werewolf generated its own upkeep trigger and you had busy beginnings of turns as each werewolf transformed one by one
Its also cheap to activate and cant be countered (it's not a spell, but an activated ability)
If youre looking for a more permanent solution, Oubliette is your best bet
Even if they do, its affinity ability makes replaying it incredibly easy
With Liberator, Urzas Thopter and the new Skittering Cicada you can play cards on other players turns to get the most out of the Monolith
Duskmourn's scarecrow cards are then rounded out by two legendary examples, the first of which is the black and green Swarmweaver, resembling a crooked rotten tree creature, actually formed from tied together broken branches, with one of those antique woven honeybee hives for a head