Dragon, Expert Tinker

Flying, Tinker X (X is the number of Tinkers
on the battlefield or in graveyards.)
Dragon, Expert Tinker has all Tinker abilities
of all Tinkers on the battlefield or in graveyards.
When Dragon would leave the battlefield, instead shuffle her back into her owner's library.
-2: Search your library for a vehicle and put it
into your hand
-4: Create a PRT database artifact token with
"Tinkers you control get +1/+1"