This is Stonescar Zoo,
not Stonescar Burn. It is not a SMOrc deck. Stonescar zoo is an aggressive, minion-centric board control deck which takes advantage of Shadow's efficient hard removal and powerful early game minions while splashing in Fire's direct damage to help close out games.
It is also a
true budget list, running exactly zero legendaries!
Gameplay:
Mulligan for one and two-drop minions and possibly Favors, because you want to get on the board as fast as possible. In the early game, ideally you want to play your over-statted or high threat minions like Knifejack, Argenport Instigator, Lethrai Ranger and Onion Ronin to estabish board control. As the midgame approaches, you'll need to decide when to transition into pushing face damage.
Plague is an anti-aggro tech but it can also offer value in other matchups by allowing you trade up against larger minions.
Steward of the Past is also a strong anti-aggro card, especially against Rakano.