Condemnation is a Unique Dagger in Diablo IV Season 15 for Rogue. It drops from Duriel, King of Maggots.
Unique power
Your Core Skills deal [45 - 60]% increased damage for 5 seconds when Consuming 3 Combo Points. Casting Basic Skills always generates 3 Combo Points. (3.2.1 added: Generating Combo Points allows you to generate the same amount of Combo Points for 1.5 seconds when you spend them.)
Affixes
Ranks to Core Skills (+1-2)
Where it drops
Duriel, King of Maggots (Gaping Crevasse, Kehjistan) - Greater Lair Boss, 2x Mythic drop rate (boosted/targeted drop)
Belial, Lord of Lies (Palace of the Deceiver, Kehjistan) - mimics any chosen boss loot table, guaranteed Ancestral Unique, highest Mythic chance