Piercing weapons to use mainhand over epic:
S Tier
Vyemm's Fang - Vyemm dagger
Mrylokar's Dagger of Vengeance - Vulak dagger
A Tier
Massive Heartwood Thorn - Tunare dagger
Serrated Dragon Tooth - Doze dagger
B Tier
Flame Etched Short Sword - Kreizenn dagger
Frosted Ice Spike - From Cekenar
Primal Velium Spear - From named ST golems, for the proc
C Tier
The Horn of Hsagra - From Tormax, Droppable
Priceless Velium Spear - From ST trash
D Tier
Thornstinger - Sky quest item, proc will be blocked by focus or other STR buffs, but still sleeper OP if used correctly
F Tier (don't use these unless you want to die, erm, I mean tank)
Salindrite Dagger - Legacy item from ST. Droppable. Similar proc to
SoD. I had one on live and loved it. Very rare on P99.
Dragonspine Rapier - From Zlexak, procs spell like dooming darkness similar to necro snare, no poison counters despite the name
Willsapper - From Vaniki in DN, highly contested for warrior mainhand. Procs slow.
Trident of the Deep Sea - From Koi. Procs weak slow that is cold resist instead of magic resist, so useful for certain targets. Also desired by warriors.
Ikatiar's Stinger - From Ikky. The strangely itemized high hate proc makes this terrible for rogues, and knight weapons are better for an SK.
Feverblade - Bane of the Shissar - Pox dagger from VP. Best aggro weapon in game for warriors.
Ragebringer goes in offhand until you get
Claw of Lightning, then weapon swap Ragebringer mainhand for backstabs because attack bonus.