Ring of Mendeln is a Unique Ring in Diablo IV Season 15. It comes from Random world drop / any Lair Boss (one guide: 'drops at any Difficulty Tier, increased drop rate per Torment tier'); 3.2.1: all Uniques drop from level 1 in any Difficulty; targetable via Horadric Cube reroll.
Unique power
Every 6th attack from each Minion is empowered, exploding for [975 - 1,600] Physical damage.
Affixes
+10.0-12.5% Attack Speed
+35-94 Intelligence
+26.5-42.5% Damage
111 All Resist (inherent)
Where it drops
Random world drop / any Lair Boss (one guide: 'drops at any Difficulty Tier, increased drop rate per Torment tier'); 3.2.1: all Uniques drop from level 1 in any Difficulty; targetable via Horadric Cube reroll