Every tiered poison will have a new effect:
Assassin’s enhancement:
For every enemy inflicted with the poison, gain a attack boost of 2 to self and an attack boost of 1 to players within a 3 tile radius for X seconds, maximum attack boost is 20 (for self), 10 (for party) (10 enemies).
Effect does not stack with other assassin’s enhancements, if multiple are active, the attack boost will use the largest increase, so for example if you got an boost of 5 points from one assassin, but then a other assassin hit a poison that gives 10 points to you, your boost would change to that 10 points,. However the effect won’t go away if it is overridden, if instead the second assassin gave you a boost of just 3 points, and the 5 point effect ran out, you would still get the 3 point boost for the remainder of its duration.
Effect does stack with other attack boosts, such as from the cloak of bloody surprises.
The T0 poison will have a duration of 2.5 seconds, this increases by 0.5 seconds for each tier until we reach 5 seconds for T7. The radius remains the same, and can be increased through wismod, the duration cannot.
Now for the UT’s:
Murky Toxin:
Assassin’s enhancement:
Big bomb:
For every enemy inflicted with the poison, gain a attack boost of 4 to self and an attack boost of 2 to players within a 3 tile radius for 5 seconds, maximum attack boost is 4 (for self), 2 (for party) (1 enemy).
Small bomb
For every enemy inflicted with the poison, gain a attack boost of 8 to self and an attack boost of 2 to players within a 3 tile radius for 5 seconds, maximum attack boost is 8 (for self), 4 (for party) (1 enemy).
Plague Poison:
Assassin’s enhancement:
For every enemy inflicted with the poison, gain a vitality boost of 2 to self and a vitality boost of 1 to players within a 3 tile radius for 5 seconds, maximum vitality boost is 30 (for self), 15 (for party) (15 enemies). (subject to the same rules as the attack boost)
I wouldn’t really change the other UT’s, the Crystallised Fang’s Venom is already pretty good and the Mighty Stein and Bottled Medusozoan could probably just do with a damage increase.
This change is to give the assassin a party role to further improve the parties DPS as well as his own by a greater amount. the Murky Toxin is good for bosses, though not objectively better due to the lower max attack boost, and the Plague Poison’s change was mostly because that was the stat I felt was most related to a plague, if a little ironic.