This one is cast on something that must be touched to trigger the trap. The arrow is coated with the venom of a large monstrous scorpion.
Detect: Per-based Traps at -2.
Disarm: DX-based Traps.
Circumvent: Per-based Lockpicking at -7 finds the hidden switch, while DX-based Lockpicking at -7 disables it. Failure triggers.
Evade: Hearing allows Dodge.
Effects: 1d-1 impaling plus poison; resist vs. HT or lose 1d-2 HT; one minute afterwards, resist vs. HT or lose another 1d-2 HT.
Rearm: Yes, if you have more arrows.