Here you can find alternate masteries for each weapon. The idea is, that when you choose to master the weapon, you can pick one of its masteries. The Nick mastery can be picked alongside another mastery (treating it as a different weapon in terms of how many masteries you can have). When you use the Nick mastery as part of the extra attack of the light property, Nick replaces any other mastery you might have with the same weapon.
Club: Slow, Sap, Vex
Dagger: Nick, Vex, Sap
Greatclub: Push, Sap, Topple
Handaxe: Vex, Slow, Push
Javelin: Slow, Push, Topple
Light Hammer: Nick, Push, Sap
Mace: Sap, Topple, Vex
Quarterstaff: Topple, Sap, Push
Sickle: Nick, Topple, Sap
Spear: Sap, Push, Topple
Dart: Vex, Slow, Sap
Light Crossbow: Slow, Push, Sap
Shortbow: Vex, Slow, Push
Sling: Slow, Sap, Vex
Battleaxe: Topple, Sap, Push
Flail: Sap, Graze, Topple
Glaive: Graze, Cleave, Topple
Greataxe: Cleave, Topple, Sap
Greatsword: Graze, Cleave, Push
Halberd: Cleave, Topple, Push
Lance: Topple, Push, Slow
Longsword: Sap, Graze, Vex
Maul: Topple, Push, Sap
Morningstar: Sap, Push, Topple
Pike: Push, Topple, Slow
Rapier: Vex, Graze, Sap
Scimitar: Nick, Vex, Sap
Shortsword: Vex, Nick, Graze
Trident: Topple, Graze, Push
Warhammer: Push, Sap, Topple
War Pick: Sap, Topple, Graze
Whip: Slow, Graze, Topple
Blowgun: Vex, Sap, Slow
Hand Crossbow: Vex, Slow, Sap
Heavy Crossbow: Push, Slow, Topple
Longbow: Slow, Push, Topple
Musket: Slow, Vex, Sap
Pistol: Vex, Slow, Sap