So keeping in step with what I see your deck doing:-2 Hellhole Rats, 4 Drop that lets them decide what they discard is not very effective. +2 Rakados Cackler, One of the better 1 drops for this unleash deck-2 Glorybringer, While I like the dragon Demigod of Revenge is bigger with recursion amplified. +2 to 3 Demigod of Revenge

-1 Explosive Impact-1 Chandra's Fury-1 Cower in fear+3 Lightning bolt

-1 Deviant Glee-1 Blood Reckoning-1 Crippling Blight+3 Blightning

Bump Terminate to 3 or 4This would be my starting point.

Thanks for the help ghostfire86. My strategy was to overbuild the deck and then eliminate cards that were inefficient.Your comments will help me with my first modifications.As I was test playing the deck last night, I started to make some of the changes you suggest.

I should have bought more Demigod of Revenge, more Lightning Bolts, and picked up 2 more Rakdos Cacklers.I wanted to get Blightning but my local card shops did not have it in stock. I will have to buy those online.

Thanks again for the help. I would appreciate more comments after I modify the deck more.

I playtested against the deck a bit, and it seems a bit slow for an aggro deck. A little inconsistent, too. But that will be fixed as you tune the list. As for suggestions:

Rakdos Cackler is a solid card, so having 4 of it makes a lot of sense. You could also bump up the number of copies of Vexing Devil. A lot of players will just pay the life and be done with it, so it helps you burn them out. Goblin Guide and Monastery Swiftspear are also solid choices for 1-mana creatures (Monastery Swiftspear does need a lot of non-creature spells to work super-effectively, so keep that in mind).

I would also recommend replacing a lot of cards with more mana-efficient versions. Aggro decks generally don't have a lot of cards with more than 3cmc, so those would get cut first (except for Demigod of Revenge. that card is great for this color combo). Cards like Traitorous Instinct, Bloodfray Giant, Firefiend Elemental, Assassin's Strike, Carnival Hellsteed, Chaos Imps, and Minotaur Aggressor are way too expensive (in terms of mana cost) for what they do. You could look at the cards you have, find the effects you want (such as discard, creature removal, etc.), then search for cards that do the same thing but for less mana. That way, your deck makes an impact on the game much sooner.

Then, you could remove a lot of the singles you have in the deck. The more of a particular card you have, the greater the chance of you drawing that card. In your deck, you currently have 4 copies of Rakdos Cackler, which gives you a greater chance of drawing one than you would have of drawing a Temur Battle Rage, for instance. When you're building a deck, you want as many copies as possible of cards that you really want to draw early on and fewer of cards that are either situational or expensive.

Hopefully that helps a bit!

Thanks, Urethra_Franklin this really helps.I have been trying to buy more copies of the Vexing Devil, but have had no luck so far.Your recommendations to limit my single cards is something I have been working on with this deck. I think I have already gotten rid of Chaos Imps, Firefiend Elemental, and Bloodfray Giant. I need to pay more attention to mana costs. I tend to really like cards abilities and forget to compare it to another similar card with less mana costs, like Goblin Guide

This deck needs some rebuild - Ancient Grudge is ok, but it'll do better in sideboard instead of some useless cards that cost 6 or more and do nothing. Same thing with Grafdigger's Cage
If you want to use Demigods then best place for them is graveyard - I recommend Faithless Looting, so you not only get rid of some Demigods from hand but also lets you draw some more cards which equals to more options ;)
If you want some inspiration or help you can see my Rakdos deck, that I'm currently using (freshly upgraded) Devilish Dance [Rakdos Fast Aggro]

Vlasiax I only have the Ancient Grudge and Grafdigger's Cage because I mostly play against my friend that is using 4 Quicksilver Amulet combined with Emrakul, the Aeons Torn. Is there a better way to deal with those cards, or just beat him before he can play them? Faithless Looting is an excellent suggestion for my deck. I didn't consider it before because I only had 1 Demigod of Revenge so it didn't make sense. I would be stupid not to include it now that I have 4 Demigods. I am going to look at your deck and take notes. Thanks for the help.