I think most people will look at this card and just assume it's frakking terrible. But here at Casual MTG, we like to have a positive outlook on life.
My first complaint is that the activation cost should have been 1-2 mana tops. My second complain is that the jar should gain eyeball counters if any creature were placed into any graveyard. If it weren't for those two points, this card would have been leagues better than it actually is. On the other hand, I think most people are going to severely undervalue this card at face value. Why? Card advantage! Specifically talking about Innistrad Block, this is consistent, colorless card draw! Just like Drogskol Reaver, at this point I think you have to over value any and all forms of permanent card draw power in this block.
Creatures die and you draw cards, period.
(My third complaint is that it should have had some ability to filter the top of your library to make Transforming a Delver of Secrets more consistent, but that's another story for another day.)
White/Green or White/Blue tokens to maximize the number of creatures that will die during the course of a game therefore maximizing eyeball counters therefore maximizing how deep you dig into your library. It seems to me that this type of card drawing is a specific type of card drawing. It's not raw strength, it's more specific. It actually functions more like a tutor than a Howling Mine. I'm thinking of a deck that makes mass amounts of creature tokens that tops off with specific cards which allow you to take over the game... and that brings me to White/Green tokens running Elspeth, Garruk, and Ajani. You could cut down on redundancy of planeswalkers and even have more reliable draws when it comes to spot removal and board sweepers.
I'm also feeling some blue... but the exact components aren't coming to me right this second. I'm sure it will with time.