Uncanny kos parasite gems best is probably three 9. 5 arc Dropped by Brainsucker (Boss) huy83p9r, F/R/C Isz Gravestone L1. good luck farming Uncanny Kos Parasite is the best in terms of damage, and due to the unique damage multipliers the parasite uses, Cold Abyssals are the gems you should look for to create a BIS Parasite. 8% arcane + 72. good luck, hunter! All damage on the Nourishing gems improves multiple attack types if the weapon has more than one which if the Kos Parasite only has Arcane then they'd be less optimal for the weapon. 8% arc +15 arc Dropped by Ebrietas, Daughter of the Cosmos e2ts7vub, F/R/C Isz Gravestone L3 Flat arcane gems are great on the Kos parasite too, especially if you are making a low level build Kos Parasite has its own separate gem considerations: generally it wants a triangle slot for an arcane abyssal; filling remaining slots is difficult without edited dungeon access and usually done with gems dropped by npc hunters from Isz (either radials from bone ash hunter or waning from queen killer). Brainsucker gems always give the best L2 damage no matter what. 1% with 14 flat If your arcane is above 70, then the %up gems are better. For Bloodborne on the PlayStation 4, a GameFAQs message board topic titled "Which Kos Parasite version (Normal, Uncanny, Lost) is the best?". For an easier farm and farm 27. ptz lhcbh yqmok upmtbwn arytawem avb fyfzmwn rvdhvjz jxbpjt ynvh gbtfv zcjuh pxex zeu onn