Caustic Sundew

Magical; hazard, material

Region: Feywood, Unrelenting Marsh (wetlands, sites of concentrated magic)

A Medium-sized plant often found in swamps and bogs, the tips of the caustic sundew’s arm-like foliage are covered in a sticky, acidic liquid that it uses to ensnare its prey. Adventurers who enter a square adjacent to a caustic sundew must make a DC 16 Dexterity saving throw or take 4d6 acid damage and be grappled by the sundew.
An enterprising survivalist may be able to carefully harvest the sundew’s acid and distill it into a corrosive substance that can melt through wood and some metals. A successful DC 18 poisoner’s kit check harvests enough raw materials to create one instance of the acid, detailed below.

Sundew Acid (400 gold). The acid produced by the caustic sundew may be distilled into an acid that may be applied to surfaces to weaken or damage them. When applied to wood or a weaker metal like iron, the acid begins to eat away at it, inflicting a penalty to its AC. Wooden surfaces (such as doors) incur a –2 penalty to AC, while something sturdier, such as an iron door, incur a –1 penalty to AC