[1.2.1.0] Aegis of Retirement: 4:30 Crucible Gladiator 150-170, Shard 90, Celestials, tanky Lightning retaliation caster Archon + couple of bonus retaliation builds by mad_lee

Grim Dawn Classes, Skills and Builds
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This is a good question! Challenge layers (as dangerous domains are called in the game files) do improve the odds of getting rare affixes (except in “easy” challenge layers).

The tables @mad_lee showed above assume no challenge layer. The relative frequency of affixes within the same tier does not change depending on challenge layer, only the chance of rare vs. magic.

For example, here are the affix combo rates on Ultimate for a Gargoyle Girdle dropped from a Hero mob (or BossChest, in SR), assuming different challenge layers:

No challenge layer

magic/magic 13.31%
magic/rare  43.17%
rare/magic  43.17%
rare/rare    0.36%

Easy dangerous domain

magic/magic 14.87%
magic/rare  42.21%
rare/magic  42.21%
rare/rare    0.70%

Hard dangerous domain

magic/magic  9.25%
magic/rare  45.00%
rare/magic  45.00%
rare/rare    0.75%

Roguelike dungeon

magic/magic  4.66%
magic/rare  47.27%
rare/magic  47.27%
rare/rare    0.79%

Boss chest in SR

magic/magic  2.48%
magic/rare  48.35%
rare/magic  48.35%
rare/rare    0.81%

Edit: the numbers above were for patch 1.2.0.x, for patch 1.2.1 see here: Patch 1.2.1 changes to rare/rare MI drop rates (vendor farming is nerfed)

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