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The table has been updated as the amount of data has increased. I'm satisfied so I'll stop here for now zzz
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For legendary runes
Choose “Summon Boss (Torment IV)”
Summoned bosses have a chance of dropping 1 rune when defeated
The drop rate of runes on the body tends to be the lowest in Vershan (30%), and the highest in Duriel and Andariel (90%) (based on my own research)
Torment IV's summoned bosses almost never drop magic runes, so they have a higher legendary rate than other content (simply because the mother count decreases)
However, considering the ease of collecting summoned items and the direct drop of Mythics, the total benefit will remain the same if it is a summoned boss.
Of course, Duriel and Andariel are the first choices in terms of runes, but other summoned bosses drop summoned items so they are not wasted.
Since aiming for Mythic is also included in the reason for aiming for Rune, the number of trials is also important. The ease of obtaining summoned items and the ease of defeating the boss in the first place also affect efficiency.
Efficiency will be different depending on whether Duriel can be defeated before he can retreat, and whether Andariel can survive the 3rd body phase of the barrier, so let's take this into account. Even on top of that, the goal for the time being will be to develop him to a level where he can instantly kill Andariel.
Data support
The table below is the result of a bloody process in which I counted and tabulated the runes that dropped when I defeated the summoned boss (Torment IV).
You can see from this table that almost no magic runes appear.
I think all summoned bosses have a chance of dropping legendary runes, but whether or not they have a drop record is quite important data.
If there is a rune you are looking for, I think it would be a good idea to focus on bosses that have a track record of dropping it. Basically, Duriel and Andariel are recommended
According to my data, Andariel's legendary rate is by far the highest (30%)
If you want magic runes
First choice is "underground city"
Second candidate is "Whisper Tree Reward"
Magic runes almost never appear on summoned bosses, so if you're aiming for magic runes, go around the underground city and do a gacha at a treasure trove.
Torment IV's "Harmony Offering" drops 4 runes and has a high magic rate. The world boss is not something that can be orbited, but it will drop 3 at a time, so let's participate when the time comes
Notes on Gemstone Merchant Gacha
Since 6 runes of 3 types are used for mythic exchange, it is better to have 6 or more in stock. You can then use the extra money in Gacha, but if you don't particularly need it, keep it stocked.
Main sources for related items
General summoning items
Underground City (Giant's Offering)
Randomly drop 20-30 pieces per lap in Torment IV
Mugglinant's Heart (for Virshan)
Hell Tide
Whisper Tree Reward
Living Steel (for Grigoire)
Helltide (Tortured Treasure Box/Mysterious Treasure Box)
Drop 2 from Tortured Treasure Box, 6 from Mysterious Treasure Box
Distilled fear (for ice beasts)
I don't know where to get this item, is it no longer available in Nightmare Dungeon? I can't see it definitely coming out
Exquisite blood (for Jia)
Blood Maiden
World boss
Egg covered in slime (for Duriel)
Vershan
of painFragment (for Duriel)
Grigoire
Needle doll (for Andariel)
Ice beast
Sandburn Shackles (for Andariel)
Zia
Giant's Offering (Summon Item)
Drops from summoned bosses at a rate of about 15%. It will cost you in the end because there will be a lot of trials.
Harmony offering (rune)
Dropped by the abyss boss. Drops at about 25%. I can't say whether it's easy to appear in high tiers
Sometimes available as Whisper Tree reward
Radiant Radiance (Mythic replacement)
Season Journey Complete Rewards
Mythic decomposition
Lilith's Aftermath First Clear Reward
The bug will be fixed so that Lilith can be obtained in patch 2.0.3
Notes on rune “Zan”
On PS5, the magic rune "zan" and the legendary rune "xan" are spelled the same, so it was "zan"! Even if you say ``that's it!'', it's just a warning because there is a pattern.
Runes that have not appeared personally
Yul④
Exol⑤
Aff⑥
Squirrel⑥
Tom⑦
Ohm⑧
Listed in descending order of the number of possessions at the moment. Since Legend Rune does not have a gacha, it is the total number of drops from the start of the game to Paragon 249 hours.
