I think this is strictly worse then Psychatog...Since you psychatog feeds off every card you've drawn even before the 'Tog lands, While this has to be in play before you start drawing...In fish deck you're not likely to go nuts with card-draw, and in control decks you most likely want to draw the cards before you land your finisher.
/Zeus
That is why this guy is better with reusable draw enablers like Top and Sylvan Library.
Tog is a one time pump while this guy keeps his +1/+1. This is relevant.
Tog comes in to play as a 1/2 while this guy is a 3/3.
Tog doesn't care about the nature of the cards he just eats everything turning every card into damage. And that is why Tog WAS playable and this guy will be harder to figure out. Another approach is needed. Sylvan library is not a bad card on its own. I used the card as a draw engine with children of korlis/Oath of ghouls to get a serious mid game advantage. It was slow but against the faster decks wich was tendrils you had the children to stall and other cards to disrupt. Anyway to stay on topic:
Lorescale Coatl has its own demands and with a proper design I think their is potential to make it work.