RDW v1.2

comments are welcomed. used to run quests and howling mines, but ive cut them for a traditional(ish) burn. Spawning breath is just somthing id like to try. Using the spawns as mana ramp or chump blockers. although glancing through my deck, i have alot of red mana symbols e.g. ball lightning, searing blaze, hells thunder. the side board is to counter my opponents decks. combust - baneslayer angel earthquake - creature control ruinblaster - jund manabarbs - control\rock unstable footing - kor firewalkers dragons claw - mirror i would like to make space in the sideboard for another dragons claw, but im unsure about where it should come from. my main meta is jund, uw control and mythic. also, any ideas on what to run after rotation would be welcomed. im clueless...