FlashDash from what I was told is just suppose to be put yellow poison on mobs (it's not suppose to do significant damage). You should use other spells when the yellow poison is on the mob (maybe someone with more knowledge on flashdash can input on this).
I realized the bene curse rate was broken when the server first went up. I put in a little quick fix which should be put in on next reboot. The rate at which you curse your weapon will now depend on the amount of curse you have. Just plucking random numbers out of the air (this does not reflect the true algorithm for cursing / lucking weapons):
e.g.
curse 1 = 1 in 10 chance to curse again
curse 2 = 1 in 20 chance to curse again
curse 3 = 1 in 30 chance to curse again and so on..
flashdash same as TDB in terms of poison, when yellow poison(stunned) is on the mob its stuns them and all damage received by X mob or player is 1.2/1.5x more
so say you flash dash/or tdb the mob and it turns yellow
if your next hits were 100 100 100 100
would do 120 120 120 120 while it remained yellow poisoned.
this damage also stacks on red poison(which is also 20% damage increase)
so if mob was red and you hit yellow poison on mob you would do
140 140 140 140
based on you hitting 100's