Parsa isn't the best faction for a mono deck, but for me this deck works pretty well and is enjoyable if you like playing deserts. Because mono Parsa isn't used much it has the advantage of being unexpected and your opponent won't be entirely sure which cards you are running.
Ghul is a decent body but is mainly there to stop necro decks, so it can be swapped out if you aren't running into any necro on the ladder. Salt the Fields is only there because Parsa doesn't have other options to deal with enemy enchantments, except for Kaveh, Khyber Warlord. You should consider using Kaveh instead; I didn't test with Kaveh because I didn't have it when I put this together.