Npc: Infested Duelist

Evasion. If subject to effect that allows Dex save for half damage takes no damage on success and only half if it fails.

Parasite Sense. Advantage on attacks vs. poisoned creatures.

Plant-Powered Mobility. Opportunity attacks made vs. duelist have disadvantage. If the duelist is prone at the start of its turn it can immediately stand with o costing movement.

Multiattack. One Slam attack and two Shortsword attacks or it makes two Thorn Shot attacks.

Shortsword. Melee Weapon Attack: +10 to hit, 5 ft., one target, 9 (1d6+6) piercing damage.

Slam. Melee Weapon Attack: +10 to hit, 5 ft., one target, 15 (2d8+6) bludgeoning damage and target: DC 15 Con save. On failure target takes 14 (4d6) poison and is poisoned 1 min. On success target takes half damage and isn't poisoned. Poisoned target can re-save at end of each of its turns success ends effect on itself.

Thorn Shot. Melee Weapon Attack: +10 to hit 30/120' one target 10 (2d4+5) piercing damage + 7 (2d6) poison.

Spore Cloud. When it takes damage from a ranged attack emits a burst of thick yellow spores that surround infested duelist and heavily obscure area within 5 ft. of it. Spores dissipate at start of duelist's next turn.