ilvl 50, Pure skiller.
Using the lowest ilvl possible increases the odds of rolling a skiller but cuts down the number of useful suffix’s available.
There is a 50% chance of rolling a charm with skiller, 25% prefix only and 25% prefix and suffix.
There are 74 non-skill prefix’s available and 21 skill prefix’s = 95 in total.
21/95 = ~0.22
But given that there is only a 50% chance for a prefix to show up we halve that number
= ~0.11.
Therefore out of 10,000 rerolls (30,000 pgems) 1100 should come up with skill mods.
Thus there is a ~ 1/10 chance of a skiller at ilvl 50