I like this a lot, I just picked up Teneb and was thinking of how I wanted to play him in Commander, this was really useful! I'm building one very similar to this; it'll be my first commander deck. Thank!
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If I was actually to purchase the necessary cards for this deck, I would overlook the Misty Rainforests and Gaea's Cradle simply because they are too expensive.
Love it. It's really twisted and tricky, just like all your other decks. possible inclusion of Epic Struggle (not that it needs it).