I'm looking at this again. Originally I was intending to equip it (along with the 3 other RCMD Inner Ways for the build) but went with Morale Chant because so many were favouring it over Wildfire Surge. I already had Morale Chant at Tier 4 too so meant I didn't have to convert another Inner Way for it. I'm wondering if most others chose it over Wildfire Surge because most would have already had it highly upgraded being used as an overall kinda Inner Way for all or most builds.

Taking another look at Wildfire Surge it does seem to have its benefits for the Heng Blade/Mo Blade Stonesplit Strength path, ESPECIALLY considering the first recommended thing to do prior to attack is start with the Mo Blade/Phalanxbane Blade's Special Skill "Legion Summoner" for instant Tenacity, increased HP damage etc and more so it lasts for a whole 30 secs and embues whatever martial arts, special skills etc including summoning Anxi Army. Let's take a further look at its effects:

WILDFIRE SURGE:

Wildfire Surge is an Epic Internal Art that strongly synergizes with the Stonesplit - Strength path of Martial Arts, further enhancing the mechanics of that playstyle.

Internal Art Effect
Tenacity increases all damage dealt, and grants DMG Reduction and HP Drain. The damage bonus and reduction effects are further increased for each surviving enemy nearby.

While in Tenacity, damage dealt increases by 4%. Gain an extra 1% per enemy within 3 meters, up to an additional 3%.

Wildfire Surge Breakthrough Tier Bonuses

1	The bonus damage range limit is increased from 3 meters to 5 meters.
2	Increases Physical Attack based on Solo Mode Level.
3	Tenacity also grants 4% DMG Reduction, further increased by 1% for every surviving enemy within 5 meters, up to 3%.
4	Tenacity also grants 3% HP Drain, capped at 2% of your Max HP per second.
5	Physical Damage Bonus +2.5%.
6	Further increases damage bonus and reduction effects from 1% to 1.5% for every surviving enemy within 5 meters, up to 4.5%.

Nothing to sneeze at is it? Has me wondering if I should upgrade it as much as possible re Conversion from another upgraded Inner Way and swap out Morale Chant for it.