Fury, the (former) scourge of Modern, completely ignores this, often being card-neutral by killing two creatures or even becoming card advantage as a Plague Wind that also wins because its a powerful double striker
According to the official article, their rarity distribution is: 68.3% chance of an uncommon FCA card, 25.7% chance of a rare, and 6% chance of a mythic rare
It is, dare I say, the first Scarlet & Violet era set to feature pull rates that feel generous
As for our mechanical friends that introduce Prototype with The Brothers War, there are 18 in total (four mythics, three rares, six uncommons, and four commons) and appear in all five colors, so youve got your pick of options
Their own art, as well as related Spells and Traps, depict them as alien invaders onto "Primitive Planet Reichphobia" and later "Primeval Planet Perlereino", taking resources and abducting their inhabitants away in canisters (manifested in gameplay as banishing face-down)