U Poisons

Ulcrun

This is a milky white, viscous liquid
that is effective on all warm blooded creatures, by insinuation only (No saving throw).
Two rounds after contact, it causes 1-4 (1d4) damage to the muscular system - weakening and softening tendons, ligaments, bones and cartilage. On the following round, it causes 1-12 (1d12) damage and then take 1-4 (1d4) damage on the third round after which the effects of the poison pass. Until healing processes (either natural or magical) counter it's damage, the effected creature will have lost 1- 4 (1d4) points of strength and dexterity

Uropygus gas

Save vs. poison (-3) or fight/defend at -3 due to nervous spasms, lasts for 3-18 (3d6) rounds

Ustilagor acid

Causes 2-5 (1d4) damage per round for 2 rounds

Type

Biomaterial