There just aren't that many Vehicles in the game, since the subtype Vehicle was introduced in Kaladesh in 2016
Their existence was key to the story of the original anime and manga until their conclusion, and their legacy continued into future incarnations of the franchise like Yu-Gi-Oh
As long as many of your permanents are mana value 3 or less, you can always have something to return to the battlefield when Sun Titan attacks or ETBs
I also love Sun Quan, Lord of Wu and my personal favorite, Diaochan, Artful Beauty
If you're thinking of putting in a bid for the crayon Umbreon, you should know the seller claims the card is in 'Near Mint or better' condition, but watch out, it's ungraded
If you cast Teferis Protection in response to Phyrexian Dreadnoughts trigger then Phyrexian Dreadnought phases out and you can't sacrifice it as the trigger resolves when it phased-out and the game doesnt see it