Nimble Escape. Yegg can take the Disengage or Hide action as a bonus action on each of its turns.

Improved Critical. Melee attacks score a critical hit on a roll of 19 or 20.

Tainted Reanimation. The first time damage reduces Yegg to 0 hit points, it must make a Constitution saving throw with a DC of 10, unless the damage is radiant or from a critical hit. On a success, Yegg drops to 1 hit point instead.

The Second time damage reduces Yegg to 0 hit points, it must make a Constitution saving throw with a DC of 15, unless the damage is radiant or from a critical hit. On a success, Yegg drops to 1 hit point instead.

The Third time damage reduces Yegg to 0 hit points, it must make a Constitution saving throw with a DC of 20, unless the damage is radiant or from a critical hit. On a success, Yegg drops to 1 hit point instead.

Yegg cannot reanimate more than three times, once the goblin is reduced to 0 hit points for the fourth time, Yegg melts into a pool of fetid black goo and rotting flesh.

Multiattack. Yegg makes two attacks with its scimitar. The second attack has disadvantage.

Necrotic Strike (Scimitar). Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage. On a critical hit of 19 or 20, the target takes an extra 4 (1d6) necrotic damage in addition to the standard critical damage.

Shortbow. Ranged Weapon Attack: +5 to hit, range 80/320 ft., one target. Hit: 5 (1d6 + 5) piercing damage.

Redirect Attack. When a creature Yegg can see targets him with an attack, Yegg can  choose another ally within 5 feet of him. Yegg and the ally swap places, and the chosen ally becomes the target instead.