Durza is an odd fellow, working more as a support than a damage dealer himself. His basic attack may provide some single-target damage, but is more of a slow and applies significant defensive buffs to allies. What his ultimate provides an attack speed boost and his passives allow it to apply Vulnerability to enemies in range. This already makes Durza a strong Chaotic support, but he also gives Inspiration and damage increases during his ult making him a Chaotic powerhouse and a niche support for others.