As always, happy brewing, and may your draws be timely, your triggers pronounced, and your opponents thoroughly confused as to how you're casting game-changing sorceries at their end step
So, I think, at least to start, the sideboard of this deck would probably be heavily slanted against control decks with Thoughtseizes and maybe Brain Maggot or Sin Collector, as well as having some good anti-aggro cards (Nyx-Fleece Ram comes to mind.) Id be comfortable playing this deck against midrange decks as-is
7 Enduring Courage Showcase & Fracture Foil - $86.91 In the spirit of red aggro, Enduring Courage gives your creatures haste and +2/+0, increasing your attack effectiveness
Credit: Wizards of the Coast Quick Fixer FromTheShire: Another combat damage trigger which is always a little dicey, this one at least has built in menace for a small amount of evasion
Ignoring the text, it even has the same appearance as a Filler Card