Ausaka, Second Child

Other Humans you control get +1/+1.
Each Vehicle you control get +1/+1 as long as
they are a creature.
Whenever Ausaka, Second Child becomes tapped,
you may pay {x}. If you do, reveal the top X cards
of your library, put all Humans and Vehicle cards
among them into your hand, then put the rest on
the bottom of your library in any order.