Cosmogrand Zenith, the three mana mythic from Edge of Eternities, pays you off every time you cast your second spell in a turn, either making two 1/1 Soldiers or putting a +1/+1 counter on each of your creatures
If you can stomach the cost, with the rest of the sets sold out and some singles already going for over $500, you'll want to lock in your preorders before everything vanishes faster than you can say Chocobo
Play Boosters are the ideal way to experience Avatar: The Last Airbender in a play setting
I know Im partial to the ol Boros-Charm-then-board-wipe play
Dusk // Dawn is tailor-made for this deck since you wont lose any creatures (aside from your commander), and ditto for Slaughter the Strong
Bouncing all nonlands for seven on your turn is basically just a worse Cyclonic Rift, but the ability to end an opponents turn if you pay the extra three is really something