[Edi]

O'al Kan's Sceptre is aoe 1 (or was it 5) 10 AN fatigue damage. Sleep vines are 33 fatigue damage per hit, each has 3 attacks.

All the weapons that cause fatigue damage you can find by filtering the Dom3 DB weapons page for weapons that do stun damage. Then you can take a look at how much, whether it's AP, AN or neither and any other specialties.