Having too many vehicles can be too much of a good thing
There are other ways to draw a lot of cards with white, but I'm partial to the enchantress strategy, which in my opinion is some of the best card draw in the game, let alone for mono-white decks
Nogi, Draco-Zealot discounts your Dragon spells, and if you control three or more Dragons, Nogi gets to turn into a Dragon and fly alongside them
Not only can you copy Basic Pokemon on your Bench, like Reshiram & Charizard-GX from Unbroken Bonds , you can copy the attacks of Evolution Pokemon-GX, such as Naganadel-GX from Lost Thunder
Notice the two missing
If you stack the triggers correctly, you can sacrifice a Butcher Ghoul with Yawgmoth and return it to the battlefield before targeting it with Yawgmoths ability that you just placed on the stack, removing the +1/+1 counter the Ghoul gained, making it ready to die and return again