Of the three, vehicles seem strongest, because they offer much more immediate value
It isnt easy to reach seven lands, but specific commanders like The Wise Mothman or The Gitrog Monster can do that with ease
Resolve a Wheel of Fortune and kill every utility creature and get someone low and you get a 21/21 beater
If youre anything like me I wanted to include a section just for you: Ragost, Deft Gastronaut (Red/White
It obviously is planning on finding the exact fatty you want to recur but it does have potential to be a good utility card in combination with a things like Deep Analysis or Jace, Vryn's Prodigy
A 6/6 flyer is already a threat, but the moment it hits a player, it can wipe their entire creature board and clear the way for your next attacks