Ka Faraq Gatri, The Doctor

When Ka Faraq Gatri, The Doctor enter the
battlefield, create a legendary token X/X vehicles
artifact with Flying and Crew X named Tardis.
You may tap any number of planeswalkers you
control with total loyalty counter equal or higher
than the crew cost of vehicles you control instead
of paying their crew cost .
Whenever a vehicles your control dies, you may
pay {2}. If you do, proliferate.