Here is something you definitely wouldn't believe in if i hadn't back it up with a screenie.
So, you remember those almost-useless-above-lvl-10 assassin's poisons but let me quote after wiki:
What makes it almost useless is bolded. Now have a look at my screenshot.Active Benefit: Choose one of 3 kinds of poison, Assassin's Focus: Soulshatter (1d3 Wisdom damage, 6 seconds of -4 Will saves and -10 Spell Resistance), Assassin's Focus: Icechill (1d3 Dexterity damage, 6 seconds of 50% slowed attacks), Assassin's Focus: Thoughtburn (1d3 Intelligence damage, 6 seconds of no spellcasting). For 60 sec, your sneak attacks will have a 33% chance of applying that poison. If the target fails a DC 19 Fortitude save, the effect triggers on it. In addition, you have +2 to hit with sneak attacks and +20 to confirm critical hits.
Epic content, giant (they have nice fort saves), CR 38
And i swear it didn't proc one time only, it was there for almost the whole time. What happened? Have devs boosted it recently or is it some kind of a bug?