The paralysis toxin does last for far too long. 3 rounds I can see. 2 seems too little.
However, the sleep toxin in the middle of combat is kinda lame. Nobody can cast sleep in combat or blackjack in combat and have it work, yet sith can. Oddly, that's not my problem with it.
If a sith is to use toxins in combat, put someone to sleep, combat should not end immediately. The sith should have to flee from combat in order for it to go into effect. The reason for this is because if you attack something that is sleeping, combat starts and the sleeping person wakes up. This happens whether or not it is from sleep spell or blackjack. Since a sith knows if the toxins work but not the exact second they take place and the victim falls asleep, a sith in the rage of combat not knowing the exact time could hit the victim, waking the victim up again.
This is why I feel that the sleep toxin should only take place if the sith flees after giving it.
