Jace, the Mind Sculptor was the first planeswalker to get banned in Standard
This deck gives up creatures for artifacts that function as elementals, which means targeted removal can risk you overcommitting to elementals, only to be left trashless at just the wrong moment (yes, having no trash is a bad thing)
If you have copies of the Power Nine in good shape and you arent actively playing Vintage, consider getting them graded
However, this species has a hidden ability that can be acquired by breeding
They're powerful, flashy, and, for longtime fans of both games, pretty irresistible right now
However, the reward for triggering Imotekh is substantial enough that going infinite may be fine as a backup plan to large-but-finite beatdowns, ala Bridge from Below