That gets way stronger with enchantments like Utopia Sprawl that allow your lands to tap for 1 or more mana or lands that innately tap for lots of mana, like Nykthos, Shrine to Nyx
Any of its creatures has the potential to grow into a huge threat, given enough time
You see, if you cast a spell that sets up an effect that happens "at end of turn" once you've past the start of the end-of-turn step, you can keep the results of that spell around until the next end-of-turn step
The Speed Demon The Speed Demon will draw you some cards on top of an already good body
Divine Smite Youll primarily have Divine Smite in your sideboard against black cards, but its not a dead card if you happen to run it in your main deck
Vehicles have been rather disappointing in Standard so far, so it would have been nice to have more cards like this in the main set