This is an analog to Jori En. Although it's more expensive and doesn't replace itself the turn it comes into play, on the long run it's waaaay better. Even if you never reveal a card with lower cost than what you play, you'll always draw 1 from whatever you play.
I think this is insane. I'm not sure it's casting cost allows Vintage playability, specially when you can just play Mentor and win, but this isn't taking Mentor slots, but maybe other draw engines. They theoretical Leovold BUG deck got a new friend?