Yuppley wrote:
Scorpid poison Stacks and iirc, scales with rap, and can do ~700 damage per tick, which is easily the best pet damage. Keep to rank 4, the extra time gives you a chance to reapply the dot.
1) It stacks up to 5 times. But on any mob there can only be one stack of scorpid poison rank x at any time. Thus if you have two hunters with scorpids, both with rank 4, then only one scorpid will poison the mob, the other won't apply any poison. The solution to this is to mix ranks, simply make sure every hunter with a scorpid uses a different rank of scorpid poison.
2) Yes, poison damage is affected by RAP. The pet gets 12.5% of the hunters RAP added to their spell damage. The pets spell damage directly affects poison damage (2/15 of the pets spell damage per tick with rank 4; 8/75 of pets spell damage per tick with rank 5).
3) Rank 4 is the best rank. One reason is that your pet has 2 extra seconds to reapply the dot. The other reason is that rank 4 will do more damage, as it gets a higher contribution from spell damage (because of the longer duration of the dot)
The whole math thingy can be found
here