So I was just thinking about the different uses one would have for the dart(s). Of course, there is Nex, GWD bosses, and QBD will probably be big ones. But is there any info out there saying if the darts will/will not work on monsters such as Jad (I would finally get my fire cape), the Kiln boss, and possibly Nomad? Yea, I could kill them all if I tried, but I dont really enjoy spending an hour and a half in the fight caves only to fail a pray switch and get killed by Jad, and my computer is just laggy enough to make Nomad impossible without me getting lucky.

Probs going to be used on nex and corp the most. Assuming there are no damage caps. But if there are and you can only use it on gwd bosses at most, then just those, with jad and lava kraken following.(assuming you can even use it on lava kraken)

Well I was thinking jagex may limit it to non quest/minigame bosses, or else make it so the dart only kills the current stage of the monster possibly? I guess I will just have to wait and see

It probably won't be able to kill monsters with a damage cap such as Nex or the Corporeal Beast.