In BPL4 I played a Low-life, Petrified Blood, MoM, Righteous Fire + Flamewall Trickster. The main idea was to use Kitava's Thirst helmet to trigger Soulrend (with the cat mtx of course) in order to spread flamewall's DoT debuff automatically.

Noteworthy Interactions:

• Kitava's Thirst has a 50% chance to trigger ALL socketed spells at once whenever you spend at least 100 mana using an ability. We can easily increase our mana cost above this threshold by using the Voidbringer gloves, which give a flat +40-80 mana cost to skills.
• Soulrend is the perfect ability to spread flamewall's debuff, since it pierces all enemies and actively changes trajectory to seek out targets. Plus, it only hits once (unlike other piercing AoE projectiles like ball lightning), which makes applying elemental equilibrium from storm brand much more consistent.
• In order to sustain Righteous Fire, we run MoM with both clarity and vitality auras. Trickster's Patient Reaper node grants 70% increased recovery rate of both life and mana, and Prolonged Pain grants 10% reduced damage over time taken. Lastly, we use a small fire cluster jewel with Molten One's Mark to get some extra max fire res.
• While not necessary to sustain RF, we also run The Agnostic keystone to recover additional life. This causes us to constantly degen mana while on low-life with Petrified Blood, but can be sustained with enough mana regeneration and mana recovery rate, and easily counteracts the life loss over time effect from Petrified Blood.

PoB for this character: https://pastebin.com/fGysLiD8

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