Razorpine

Razorpine is a very, very popular weapon used in PvP  even though it can drain your mana pretty quickly and Spectre armor's healing effect doesn't work in PvP due to its fast speed and hard-to-see projectiles.

It's very commonly used so if you go in PvP, 99.9% that a person there is using a Razorpine. Its best prefix is Mythical.