The upside is the draw, and I see relatively low downside, so this is a solid creature
It really comes down to whether or not you think its best to have an enabler or a payoff as your commander, since Szarekh mills you while Imotekh rewards you for getting stuff out of your graveyard once its milled
This meant that Pokemon itself had no stock of the previous seven expansions
However, the decks adopting its use the most (currently) are Temur Rhinos or similar Cascade-oriented decks that can levy it for an edge against matchups with Amulet Titan, Griefblade, Yawgmoth, and other top-tier decks in the format
When it's finally time to attack , let cards like Ursine Monstrosity, Giant Adephage, and Titania, Nature's Force lead the way