Deck help!

[izik99]

I'm about to order a deck (Kuldotha Red in Casual). It would be Modern but Mox Opals cost too much, so I used a {Great Furnace} instead. I got it off of Wizards when Zendikar was still standard, so are there any more recent cards that would do better than whats in there?
Ps- don't make the additions to price more than $5-10.