OK, time to update.
Thanks to new mods, this flamethrower has gained a new lease of life in my arsenal. Continuous flame make absolute chaff from enemies.
My [Ignis Wraith] build is not focused on status, it's crit based. And it's because this primary is fast enough to proc. status with almost 70% probability. And yes... it's 7 Forma build! You can drop 2 Forma if you will leave Exilus untouched.
Status combination! Viral here because every subsequent procs add 25% increased damage to health up to 325% in total after 10 stacks and Heat... because it's a god-damn flamethrower! Nah, just kidding. Heat/Viral combined with Saryn's Toxic Lash will give us 3 elemental torch (Heat/Viral/Toxin), which give us a good weapon for every fraction.
Pay attention that this is the whole configuration set.