Some poisons. Here I've (obviously) nicked some names from good old Jack Vance, and very probably some descriptions from elsewhere on the web. Apologies if some of these are your creations:
Yellow powder; extract of Cattail creeper root of Torgai. Ingested. Causes internal bleeding, bloody froth at mouth. 3d6 mins onset.
Caveblight or Dancing Oil
Whitish, cream-like and slick. A cave ooze combined with the fruiting bodies of albino underground lichens, and used to coat weapons. Injected, onset 1d6 mins. Muscles ache and legs spasm.
Mixture of Vipertree bark and Corpse-flower fungus (from the necropoli of Old Thyle); exquisitely painful but not fatal; invented by the Venefices of Sarkovy and tested on their apprentice.
Orange gum; extract of gland of tiny rock lizard from Tugersbir. Injected. Stings on skin, agonising burning throughout body. 1d2 mins onset.
An unlikely and unpleasant combination of the venom of a tiny rock scorpion (found in areas of The Reach, near Praxis) and distillate of cinnabar crystals, Hillack's Woe is thick, grainy, and virulently red. Used by a number of notorious pirate denizens of Cutlass Cove to coat weapons. Injected, 1d4 mins onset.
Jade Mushroom Powder
Found (rarely) in the South; harvested by certain Uleki shamen and wise folk. Deeply verdant man-sized puffballs; can be used for effective healing, but the spores are crippling, whether served in food (30 mins onset) or mixed with oil as a binder for needle or blade (2d6 mins onset). Save or die in screaming agony as the spores burst in the bloodstream or gut. A successful save still results in 2d6 HP damage.
Thick, syrupy and brownish-black, made from zombie dust and consecrated oils corrupted on an altar to Azmobaana, Howler In Darkness. Ingested (vile-tasting), with 2d10 mins onset. Brown lesions; flesh-rotting necrosis.
Oily black liquid, very bitter, extract of Yellowbeard lily (from the Dolchstoss Gloomfens) alchemically treated. Injected or ingested; few drops used in sweetest foods. Eyes dilate, shakes. 2d6 hours onset.
Invented in Sarkovy; legendarily lethal; also called Seven Steps and King's Rebuke. Rumoured to have been used to slay 'Emperor' Lorivade upon his throne. Causes blissful euphoria, followed by sudden agonised spasms in very quick succession; victims often arch their backs until their spines break. 1d2 minutes onset.
Thin greenish liquid, evaporates quickly. Mixture of powdered moss and snapper beetle husks in alcohol first concocted by a boot-boy of Castle Ravensburg to use upon his hated superior, the Master Cobbler. Contact; few drops suffice; freezing numbness spreads. 1d4 mins onset.
Mixture of mountain plant extracts boiled down; a thick sticky black paste the Ruck-Men use on their blades which rubs off easily. Injected; terrible burning sensations; instant onset.
Named for the black and gold variety of rose from whose sap the poison is distilled, Sable Mare is a dark amber-coloured and stickily resinous substance. Ingested; strongly salty. Puts the victim into a deep sleep for 2d4 hours, during which the victim suffers wild and often horrific dreams.
Tomb Centipede Essence
Wrung from six-inch centipedes found only in the necropolis of Rigenos; reddish and thin, it dries quickly. Contact; onset 1d4 x 10 mins. Shortness of breath and then paralysis for 1 hour.
Thick honey-like liquid; metallic flavour; Mooncap fungus (from the Tanglevenom swamps, near Shards the Wicked) dissolved in vinegar. Ingested; mixed with thick sauces; good mouthful required; 30 mins onset, then severe cramps, nausea and sweating.