Multiattack. The grafter makes one Claw attack and one Greatclub attack.
Claw. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit:7 (1d8 + 3) slashing damage plus 5 (1d10) poison damage.
Greatclub. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit:12 (2d8 + 3) bludgeoning damage.
Acid Retch (Recharge 5–6). The grafter retches forth a spray of acidic bile in a 30-foot cone. Each creature in that area must make a DC 12 Dexterity saving throw, taking 14 (4d6) acid damage on a failed save, or half as much damage on a successful one.
An ordinary dragonflesh grafter is a hulking fusion of draconic and bipedal characteristics, standing between 8 and 12 feet tall. As its original nature wanes, its draconic powers grow, giving it a thick layer of dragon scale armor that covers the grafted areas of its body. A dragonflesh grafter can belch forth a gout of corrosive acid in a mockery of dragon breath.