Maybe reconsider land destruction
With as many 3+ color cards entering in with Tarkir maybe now is a good time to reconsider more land hate cards.
My Omo deck (sliver anthems) was only able to beat a Miirym, Pantlaza, and Hashaton deck the other day because I got a [[back to basics]] out on turn three. My Omo deck's only non-basics lands are demolition field, heap gate and cloudpost.
With Tarkir making that many more 3+ colored commanders I think it's fair to punish this powerful decks. So yes, run your [[ruination]]. Play that [[wave of vitriol]].