@ cyrilpang,

Thanks for the feedback! Unfortunately most of the cards you mentioned are still quite expensive (I'm trying to make a REALLY cheap deck because when i buy all the cards it's still not going to be my main) ie. Rakdos Cackler , Legion Loyalist , Ash Zealot , Mizzium Mortars . Like i said in the description, I understand that the deck won't be super-good but it's ok because this is going to be a casual deck for me and so it is more important that it is as cheap as possible. I agree with taking out Goblin Arsonist and Flames of the Firebrand though, they are probably the weaker cards in this deck. Skullcrack is definitely staying, because it has helped me out in a lot of situations :D

The Madcap Skills and Act of Treason are good suggestions, I'll definitely consider those.

As a side note, the Rubblebelt Raiders are probably the most expensive cards in this deck - I might take them out eventually and add in something else. There might even be room for Rakdos Cackler !

As for the Bloodfray Giant , Chaos Imps and Molten Primordial , they are mainly there as late-game finishers just in case I find myself in a tough match. I've included one of each because I am testing them out, I will probably choose the best one and keep it in the deck while removing the other ones at a later time.

Again, thanks for the suggestions!

I would look towards my Mono-Red Aggro burn for a cheap red burn deck. Overall lower cmc which is good in a red aggro without mana ramp. My deck goes for about $50 on mid tcgplayer. But a lot of that cost would be dropped without running a few of the more expensive cards i do ie Vexing Devil Stromkirk Noble Ash Zealot . Hope it helps!