Nevra, Frostvector Overseer

When Nevra, Frostvector Overseer enters the battlefield, create three 1/1 colorless Rondure
snow artifact creature tokens with "This creature
can't attack or block."
Whenever a snow creature you control crews a Vehicle, you may pay {s}. If you do, draw a card.
"The fires of innovation would burn uncontrollably
without the frigidity of industrialization."