Of course, the potential of Silvergill Adept is somewhat limited by the fact that you need to play it in a Merfolk deck to cast it for two mana, and Naban isn't a Merfolk, but as the only straightforward "draw a card" Wizard in Standard, it still might be worth the effort if we can find a build to support the mixed tribal synergies
Not the most powerful or well supported of Magics creature types, but theres lots of individual bears that can fit your needs in other deck themes
When Do You Cast Cantrips
Controlling a player doesn't allow you to look at that player's sideboard
Finally, the deck aims to put tons of cards into your graveyard, and then take advantage of this (for example with Izoni, Thousand-Eyed, Golgari Grave-Troll, Jarad, Golgari Litch Lord, etc)