Quote (GodBless @ Mar 27 2017 10:33am)
This is because you can't get one anymore.
The way in which poison damage on charms with two poison damage affixes is calculated changed in one of the patches (not sure exactly which one except that it came after 1.09, and it wasn't 1.12 because that was solely the no-CD patch).
Toxic Small Charm of Anthrax, the most commonly used poison small charm, was the 290. These affixes can still drop or be cubed for, but because of the changes to the item generation mechanics, they produce now a small charm with 313 poison damage, not 290.
Similarly Pestilent Small Charm of Anthrax (which is stronger, but not used so much because the Pestilent prefix on small charms was rare and is now rarer still - I believe only Diablo, Nihlathak, or Baal on Hell are able to drop this prefix now. In 1.09, it was much easier, though still rare, to find these affixes because at least half of Hell difficulty featured only level 90-93 mobs while the maximum level mob since 1.10, other than Ubers and the three noted bosses, is 88) used to be 383, but the calculation changes now cause it to be a 451 instead.
edit: 3 seconds on google, if you want to read more it is possible
great, a big thanks! any other opinion here?