Item: Poisoned Caltrop
Base Info
Self-priming when set, total damage is 15 + (YourEngineeringLevel)/5. Also poisons whoever steps on it.
Weight: 3 emu
Stackable: yes
Storage: hazardous
Server Description: Does 15+ engineering/5 damage, poison, self priming
Item ID / Image ID: 713 / 467
To Make
Skill: Engineering
Recommended Skill Level: 18
Base Experience: 65
Food Used Per Mix: 28
Required Knowledge: 
Book of Poisoned Caltrops
Required Nexus: Artificial 1
Ingredients
3 Death Essence
2 Fire Essence
3 Iron Bar
8 Poison Ivy
Total Ingredient Weight: 19 emu