I went ahead and completed Burden of Choice (b/c why not) and I checked for the seer artifact on the table after completing each remaining step. (8,9, and 10) The artifact never appeared.
I also talked to Sidony the Shadowkeeper (again couldn't hurt) as the last step was revealed in the achievement panel in the hero menu. I think that is normal but thought why not.
I then went back to Isgarren's Quarters just to look, and nothing on the table by Niko except a vase with flowers, and an open book.