There are various kinds of d2r items items listed in this document. Rune drops form part of the category of items known as "good". The list includes "Act 1 Good" "Act 2 Good" etc., and up until "Act five (H)"Good" the letter H means hell. Monsters can have a chance to drop from this class of items. It is the "good" class includes gems, jewels and runes. Each has their own probability of being chosen in the event that it is the "good" classification is chosen at the time the monster dies. "The "good" category has the chance to be chosen in the event of a monster's death, which differs depending on the monster and zone to zone, and each boss act and super-exclusive as well as regular boss packs with their own chance of being selected among those in the "good" classes.

Another class that is chosen is the standard class of items (I deliberately simplified it to show) that includes weapons and armor as well as other items that are classified by their distinct ways and each has their own chance. If you select one class, it will be picked by chance which is given a numeric amount in treasureclassex.txt file, it will examine your MF to determine the rarity of the base item it will be dropped as.

Magic Find is not a factor in which of these two different classes is chosen They each have an equal chance of being chosen. When it is the "good" classification is chosen, MF only has an influence on the jewels that are dropped out of those in the "good" group.

The monster is killed. The game then checks for what's inside treasureclassex.txt. treasureclassex.txt file. It appears that there is "good" in addition to "items" (simplified). It chooses one depending on the changes, which are just figures in the file text. when it is selected as good and then selects gems, jewels and runes.

If you roll gems, it calculates its rarity. item which includes your MF and this is the way you obtain the item. If it chooses to use rune, it will check each of the rune chances individually to identify which rune drops on the information contained found in the treasureclassex.txt file. These are simply static odds of Best place to buy D2R items dropping. MF has no effect on the runes.