Second, drawing and using multiple Cities tends to eat up your life total, as does Serendib Efreet, and frankly Id rather use that life as a resource to draw more cards from Sylvan Library
But, all in all, you don't really need that, but at a total cost of four plus two over two creatures, it's probably rather easy to pull off if you play tutors
Note: Most cards have 2 print variations
Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.) Market price $0.05Regular$0.13Foil Based on the latest market prices tracked on TCG Stacked
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Lands are that much harder to shut down than artifacts and that is a huge part of the strength of the card