Ostensibly, white is the worst color at drawing cards, but then Wizards goes ahead and gives it this miniature Rhystic Study, which will ensure you stay ahead on card draw or keep your opponents behind the curve
Ive seen it already compared to Winota as a powered down version, so there is probably a number of players who will be interested in this kind of effect
Sure, those elements are staggered out over multiple turns, but its still a ton of value for your opponent to compete with
That doesnt mean it should go in every single deck that doesnt want a creature to die
Especially considering his fairly tame drawback
Unfortunately, it only mills one opponent at a time, making this an inefficient choice for Commander mill decks