Talk:Seer/@comment-63.230.128.101-20130714033600

"The resident dataminer, Pwnatron, is saying that the Seer parts suffer from the same Cronus drop rate nerf that Vor used to have: namely, after the first successful drop, repeated attempts at killing Vor decrease further drop rates of the Seer parts. This was a leftover of a nerf that the devs did for Vor's original drop, the Cronus BP, because players used to constantly farm it for credits."

This is from the warframe forums, so until they fix this it's probably pointless to farm.

"well for one thing its supposed to be super rare and you have to kill vor or you wont have a chance to get any parts or the blue print for it if some one else kills him then he gets the look for it but if you kill him and someone else does not then you get the loot for it its a first come first kill sort of loot."

Not sure if the second part is true, but I did play with my friends and one of them got a part of Seer while I could not find the blueprint, solo play looks like the best way to farm this if you are going to try for it.