The main idea is to keep the board clear with the arms dealer and mizzium mortars, while building up goblins (and maybe a krenko) and knock down the opponents life total with the instants and sorceries in combination with guttersnipe. If the board is clear then trumpet blast but if not, searing spear (perhaps even reverberated) can finish the game.

What I have listed in the Maybeboard are other cards I was considering for an Izzet goblin deck.

I think that a Rakdos goblin deck with a bunch of cheap unleash guys could also be pretty cool, but not enough have been spoiled yet to try and build a deck. The Rakdos possible cards are in the "sideboard." It might even be possible to start out super aggressive with rakdos and unleash stuff and then sideboard into a controlly mid-range deck.

This is my first ever constructed deck. Comments and suggestions are very welcome.