Drake, Venom 2014

Produces a potent poison that causes its victims to feel pain from even the most benign contact (weight of their clothing simple sword swing etc.). When a creature that succumbs to this poison takes bludgeoning piercing or slashing it must make DC 16 Con save or be incapacitated until end of its next turn as pain fills its body. This potent poison remains within creature’s body until removed by the greater restoration spell or similar magic or until creature finishes a long rest.

Advantage: smell Wis (Percept) checks.

Scales adapt to current surroundings. Advantage: Dex (Stealth) to hide in nonmagical natural terrain.