Within the beautifully sculpted exterior is housed a dragon’s biomantically-sustained toxin gland, pungent incense, and crushed diamond. Available in a variety of hues, the metal from which this grenade-like contraption is fashioned always matches the dragon from which the organ was harvested.

As an action, you can throw this magical device onto a surface you can see within 60 feet. Upon impact, the incense ignites, billowing out in a pungent, 15-foot-radius sphere, carrying with it the dragon’s magic. A creature that starts its turn in the area or enters the area for the first time on a turn must make the associated saving throw, suffering the associated effects on a failure. Creatures are affected even if they hold their breath or don’t need to breathe.

The cloud lasts for 1 minute if the air is calm. A moderate wind (at least 10 miles per hour) disperses the cloud after 4 rounds. A strong wind (at least 20 miles per hour) disperses it after 1 round. Once a grenade has been used, it can’t be used again until the following dawn, when it must be refilled with 100 gp of good-quality incense as well as a specified value of diamond dust.

Gold, Weakening: A creature must succeed on a DC 16 Constitution saving throw or have disadvantage on all ability checks, attack rolls, and saving throws and deal half damage with strength-based weapons until the end of its next turn. Diamond dust: 1200 gp.