- Surface effects should only be created if DnD description says so. There are many surface effects in DnD (grease, web, spike groth, and so on) - Attacks that miss the target should not cause damage for that target
It is fine that oil starts to burn if you use fire on it. But solid ground should not burn because of a fire arrow and a missing fire arrow should not set the target on fire. Enemies should not bleed fire or poison. The bite of a spider is toxic. The inside of a spider may be disgusting, but your chars wear shoes and cloth. They do not drink that stuff ( well, Astarion might ;-)
Prof. Dr. Dr. Mad S. Tist
World leading expert of artificial stupidity. Because there are too many people who work on artificial intelligence already
Prof. Dr. Dr. Mad S. Tist 
