Weapon evolves by earning points. Any match won using Phantom Assassin will earn you 1 point. Earning 40 points will upgrade the weapon to Level 2, and earning 100 points causes the weapon to reach its maximum evolution.
Hero
Phantom Assassin
Slot
Weapon
Rarity
Arcana

Twilight Schism of the Crimson Witness
Taunt: Order Up!
Almond the Frondillo
Wide Angle
Genuine Serrakura
Vengeance of the Sunwarrior
Double Vision
Mantle of the Whispered Bond of the Crimson Witness
Golden Piscean Pulverizer 