It counters so many creatures that are staples of the competitive wing of our format, like Dockside Extortionist
The Golgari deck from Worlds Top 8 had four Cottages and three Tortoises, with the Tortoise able to find a Cottage (or bring one back from the dead), while also reducing the cost of activating it (allowing the potential for multiple creature lands to attack each turn), and even pumping them
Alela also has deathtouch and lifelink, so theres potential for some Voltron strategies here, too
er, cards have been thrown
Unstable TypeArtifact Contraption Collector Number200 Raritymythic ArtistJason Felix Whenever you crank Rapid Prototyper, create an X/X colorless Construct artifact creature token, where X is the number of artifacts you control