mtg midnight hunt commander decks New Available Shadow Kin | Innistrad: Midnight

Outside of exile effects, the worst that can happen with Ojer Taq, Deepest Foundation is for it to become Temple of Civilization for a few turns

If the Octomancer can live to the end step, you then get parity on that large creature, and anything else you get in subsequent end steps is pure upside

And since you can tap your commander to untap Leyline Dowser, that can happen whenever your commander doesn't attack for the turn (or do anything else that requires tapping)

He serves as a cheap, easy tutor for your best auras and equipment, and then makes the perfect target for equipping them once he comes out as a creature