I'm trying to retrofit my pauper Izzet Blitz deck from pauper for the modern format, just on a budget. I don't have the money to buy stuff like fetch lands or shock lands, so please don't suggest those. Otherwise, any constructive criticisms and suggestions are welcome.

For those not in the know, the deck is focused on two kinds of creatures (in full playsets): Kiln Fiend and Nivix Cyclops. The main purpose is to have one or more of these creatures on the field, then sling spells like they're going out of style. Each instant or sorcery cast provides a substantial boost in power, usually finishing out with a spell to make said creature(s) unblockable for the finish.