With the interesting new Hellfire Amulet and the prospect of improvements to the Hellfire Ring and/or the Infernal Machine on the whole, lots of players are looking to stock up on keys and/or Demonic Organs before Patch 2.1 goes live. Key farming, how does it work? Not how it used to…
Each keywarden has a chance to drop a random key in addition to their normal key. For example, Odeg the keywarden is most likely to drop a Key of Bones, but could also drop a Key of Gluttony, War, or Evil. The bonus key is on a separate loot table from the keywardens normal key, so they don’t interfere with one another’s chances of dropping.
In Reaper of Souls you need one each of the 4 keys to create an Infernal Machine, and then you have to do 4 different Ubers, and the the Key and Organ drop rates are much lower than they were under the old Monster Power system. Which is why hardly anyone was doing Hellfire Rings (plus they almost always sucked). It’s unclear if desire for the new Hellfire Amulets will really change that.
As for key farming, has anyone done enough runs to comment on the RNG the Blue refers to? I have not, but I’m curious what sort of drop rates you’ll get with each key. Presumably you’ll still have to farm all four keywardens, but if you much prefer doing say, the Act 3 KW, you could probably get lucky enough on the other 3 keys to save a few trips through the other Acts. (Especially now that Bounties have made us all stupid and lazy, and searching a whole level for a monster that doesn’t blink on the map with a big yellow sonar ping seems such an ordeal.)