Once each turn, you may cast a spell from the top of your library if it shares a card type with a card exiled with this creature
includes foil and non-foil versions of all four drops in the chosen language
If you want to focus on Vehicles then it's better as it's providing a steady stream of pilots to crew your vehicles while drawing you whatever you need, filling your graveyard for recursion, and being harder to kill
I posit the following: two-cost ramp only has a consistent and significant advantage over three-cost ramp if you always want to cast a four-drop as soon as possible
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There's no doubt it will be played in commander, most likely as a part of 99, as well as in standard