I have a similar minatour deck, I like the cutthroat maneuver a lot, didn't think about that one.
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Hunt the Hunter has to go. It only targets green creatures an opponent controls. Time to Feed would work well instead. Maybe a couple hunt the hunter in the sideboard.
Mana curve mostly black..seems about right
Touche sir
Absolute Grace FTW
Unless you're trying to exile for some reason why not put in Naturalize instead of Fade to Antiquity for 2 mana instead of 3?