
Originally Posted by
EllisDee37
Eyes of Stone is listed as Lore Tier 3, so the numbers tell you how long it will take to farm Tier 3 Lore. The arcane is an incidental bonus that has no bearing on the numbers, but it's there so it doesn't make sense to not collect it.
For a concrete example, say you need 8 Romantic Sonnets. They're Tier 3 Lore commons, so looking at the table you can expect it to take on average 8 * 1:20 = 10:40 to get your 8, depending on your speed. (Everyone can use wings, so you should be able to get fairly close to my times.)
By contrast, if you need Glass Phials, you'd look at the Arcane tier 3 entries. For those you're looking at 4:05 per Glass Phial, or exactly 1 per run on average. (10 nodes * 20% chance for uncommon / 2 uncommon possibilities = 10 * 0.2 / 2 = 2 / 2 = 1.)