Is this control or aggro? Because it's not really doing either one well.

It keeps the board clear and controls until I land a demon or stormbreath then it flips. Do you have any suggestions?

I just posted this on another users deck and I think you might find some value in it.

First off there are 2 types of Grixis decks being fine tuned right now: Sperfriends/Control and Midrange. Superfriends is built around the awesome planeswalkers Grixis has access to. Jace, Architect of Thought is the captain of the team and is pretty much an auto include in any deck that runs blue. Chandra, Pyromaster , Ashiok, Nightmare Weaver , and Ral Zarek are all game changers themselves. Midrange has AEtherling , Desecration Demon , Stormbreath Dragon , and Master of Cruelties to work with. Both archetypes are tier 2 decks and can be competitive at FNM but we haven't seen any brews place top 8 at any major tourneys yet. Also it should be noted that Grixis really cant be competitive on a budget, most of its key cards are expensive.

The early game is the same in both. You want to use Frostburn Weird to protect yourself and your removal (Anger of the Gods especially) to control the board. Turn 4+ start resolving your wincons and gaining card advantage.

To start you need to pick a couple wincons for the deck to build around, that will help us in giving suggestions. I this meant to be a competitive deck or casual deck? I'm more than willing to help you build a deck, but I need a little more info on what you are trying to build.

Inverted Crucifixion is my Grixis Superfriends/Control deck that is doing pretty well. Check it out for some ideas if you want. There are also a few other Grixis deck list floating around on the site that are relatively competitive (meaning tier 2).

You have highly aggressive, dump-your-hand creatures yet you claim this is a control deck. Take out the Cyclops and Chimera and put in more control, then just have 3-4 win-conditions to finish off your opponent once they're crippled.

I am going to take out the Spellheart Chimera and replace them with AEtherling , and try replacing the Nivix Cyclops with Chandra, Pyromaster

2x Toil / Trouble to sideboard for 1x Ashiok, Nightmare Weaver and 1x Stormbreath Dragon were the changes to the brew we were talking about at lunch.

also, Anger of the Gods is amazing so you need to get it.

@Rasta_viking29 I'm trying to make it competitive at FNM, the times I have gone I have finished 2-2 losing to jund tempo and mono-black devotion decks

I think you have too many creatures, while having access to some really strong cards. I would definitely drop all the Frostburn Weird - they really have no purpose. Also think about putting in Hero's Downfall , Jace, Architect of Thought , and Thoughtseize .