Nick

Weapon mastery property. Requires a feature that unlocks this weapon’s mastery; weapon proficiency alone is not enough.

Trigger and effect

The Light weapon property normally offers one extra attack as a Bonus Action after you attack with a Light weapon during the Attack action. The extra attack must use a different Light weapon, and its damage normally omits a positive ability modifier while retaining a negative one.

Nick lets you make that Light-property extra attack as part of the Attack action, instead of using a Bonus Action. You need the Nick mastery unlocked for the weapon used for this extra attack.

One extra Light attack

This extra attack remains limited to once per turn. Nick changes its timing; it does not grant a second Light-property extra attack. You cannot also take the same Light-property extra attack as a Bonus Action on that turn.

Your Bonus Action remains available for another option you actually have. Features such as Two-Weapon Fighting can change damage rules; Nick itself does not add the ability modifier back to damage.

Example: attack with a Shortsword, then use a different Nick weapon such as a Dagger for the Light extra attack within the Attack action. Nick does not require inventing an additional “off-hand attack” action.

Other examples: Scimitar and Sickle.

Workshop tracking

The workshop shows supported mastery information for selected, proficient weapons. Resolve targets, rolls, movement, timing and effects at the table.

All weapon masteries · weapon proficiency · basic actions.

Source: supplied Player’s Handbook (2024), chapter 6, Mastery Properties (PDF page 213; printed page 214). Paraphrased quick reference; specific rules can override these general rules.