Blue loves instants, so it isnt a huge deal that you only get to access the mana on your opponents turn
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Atlantean Fate is better in this situation because it can eliminate your opponents threshold, forcing them to have no choice but to draw more sites to fix their threshold
Old Beanie, as I like to call it, is a superb addition to any deck that plays permanents off the top of your library, such as Atla Palani, Nest Tender and Vaevictis Asmadi, the Dire
Power Hungry is expensive, but makes sense with the chance to get three lore with an eight Willpower
The optional transformation, letting Kimahri copy that tapped creature while keeping vigilance and his signature ability, opens up clever lines where he can turn opponents threats into his own tools