Gruul Aggro Bo1 (for current meta) (Standard)

This is a deck that is very fast and deals with planeswalkers very well.

I wanted to build a deck based around haste creatures and riot means splashing green. The end number is 12 haste creatures with Legion Warboss and Ghitu Lavarunner providing the deck with 8 other pseudo haste creatures.

Next I added a burn/card draw package. I include these two together because they are currently positioned so well to compliment each other. No need to reinvent the wheel. I left out Wizard's Lightning because the deck runs far fewer Wizards, plus the slots are used up by the additional haste creatures. I'm going Risk Factor over Experimental Frenzy because I feel it synergizes better as a finisher with haste creatures (but I will test both). Chandra, Fire Artisen is also a very real card and may be what actually takes this slot.

The flex cards in the deck are Collision // Colossus and Domri, Anarch of Bolas.
Colossus is always useful, so I feel it edges out other removal that could be dead in certain matchups. Collision kills a ton of problem card in the format, so I'm happy with it until the meta really shapes out.
I'm not sure about Domri. I like the anthem effect, but I'm not totally a creature deck. I also like the added removal, but my creatures are pretty small and I'd rather not trade them off. If Chandra gets the card draw slots, then this may be better used as more creatures.

I would love to play Goblin Chainwhirler but the mana is rough for that. Playing Chainwhirler would mean dropping Gruul Spellbreaker and losing some of the haste punch.