War Pick

_Melee Weapon Attack:_ +4 to hit, reach 5 ft., one target. _Hit:_ 6 (1d8+2) piercing damage, or 11 (2d8+2) piercing damage while enlarged.

Javelin

_Melee or Ranged Weapon Attack:_ +4 to hit, reach 5 ft. or range 30/120 ft., one target. _Hit:_ 5 (1d6+2) piercing damage, or 9 (2d6+2) piercing damage while enlarged.

Invisibility

The duergar magically turns invisible until it attacks or uses Enlarge, or until its concentration ends (as if concentrating on a spell). Any equipment the duergar wears or carries is invisible with it.