Based on the sample of the toxin you provided for us, we think you will need the following: an arcane quickener, five somatic intensifiers, and and four pieces of runecloth.  With the vitreous focuser in tow, acquire the intensifiers from zombie or ghoul undead here in the Plaguelands!$B$BOnce you have these items, you should be able to load the counter agent into that cauldron.