Best weapon for heavy melee shadestepper

Well, my question is: what is the best weapon for a heavy melee shadestepper? Anvil crawler? Even among mythics?

 

Anvil Crawler is good for damage, but has negative walk speed, Limbo is the best for damage but has negative health regen (you can counter it with Golemlus Core and Flashfire Gauntlet) and negative mana regen (make sure it's lower than 25/5s to avoid losing mana overtime).
Make sure to have decent identifications for best damage.
Bygones works too but has negative walkspeed (it offers higher damage than Anvio Crawler)

 

Then I should consider these 3 + Sreggad for more sustainability, the best weapons I could use for a heavy melee build