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
When prepared, the creature may cast their spell for the associated cost and at the designated speed, but it'll have to become prepared again to keep doing it
I dont think well ever see any of the big cracking operations pop up with a couple hundred copies of any Oil-Slick mythic, and once the current wave of bundles is gone, thats probably most of the inventory that will ever be available
Hes very unlikely to ultimate, but the first two modes are always good to have in Commander
For example, if you control Traveling Chocobo ("You may play lands and cast Bird spells from the top of your library.") and Jidoor, Aristocratic Capital is on top of your library, you can play Jidoor, Aristocratic Capital, but you can't cast Overture