Izzet deck I built from the Golgari vs. Izzet duel deck, some trades, and a handful from my collection and previous boosters. My friends have told me that it needs to be faster, so I've tried to make it cheaper mana-wise, but I usually need to mulligan at least once to get a good opener.

It's still kind of "slow" and "misguided" for a R/U deck and i'd like some pointers.

NOTE: when commenting, please keep in mind that I have a relatively small budget for more cards.

UPDATE: still tweaking, ditched galvanoth to the maybe board and possibly ditching more creatures to insert some more control/nukes.