Rakdos aggro deck with some pretty cool sideboard tech options.
The Outpost siege and brutal hordchiefs are pretty high for the curve but some combination of the two help a lot with the problems aggro can run into (stalled boards, running out of gas or reach and some lifegain.
The plan is to get out some creatures early and swing, trade and get guys into the graveyard. There are 4 Aleshas as ideally we want at least 2 of her and rabbles to eat up opponents removal. With her online, rabble masters, spiteful returned, mardu skullhunters, and even shadowspears in the graveyard all get extra value as animate targets. I really like break through the line as a means to get damage in and make rabblemasters insane beaters once their removal is used up. Cuts, Stokes and lightning strkes offer a good suite of removal, but the deck is open to all the removal red and black have to offer. Even drown in sorrow or anger of the gods aren't horrible if your meta needs them as either card and alesha in an opening hand is a great option against tokens or other aggro decks.
Brutal hordecheif and outpost seige are both high curve options I've been thinking a lot about. The siege gives you the option of either more gas or some reach when you have a stalled board state. Hordechief does the same; he gives all your creatures extra reach as well as some life gain. If the opponent doesn't have an answer for a turn 4 horde chief before your upkeep turn 5, he offers all but one of your creatures evasion that combat phase.
Sideboard includes war-name aspirants as she works great as a 2 drop, and great with alesha. More importanly, she is an awesome response to tokens decks as she cant be blocked by 1 power creatures (also breezes by caryatids). Might be worth including mainboard. Whip and eidolon can be brought in against burn decks.
Thinking about flamespeaker as a tech option, gets brought in with alesha, gets evasion with breakthrough the line. The gas afforded if you can find matches where he connects is potentially huge. Lastly Grim haruspex is another tech option for gas as we will have a lot of creatures dying and he provides card advantage.