First, everyone relax. We’re all friends here.
Second, I appreciate everyone’s input.
I’m fascinated by all the different view points on what to me seemed cut and dry.
I still think it is a poor interpretation or implementation by Blizzard. I know Marauder’s 2 piece and Patterns of Justice 2 piece don’t randomly leave out runes. If there are any other legendary or set bonuses that say all runes but don’t include them all, I’d be interested in hearing about them and why.
Regardless, that may be an unhelpful comparison, as the difference with Night Bane is how it is applied. When I read lasts forever I interpreted that as something akin to an aura. But TimberWolf’s explanation also makes sense.
In the end, it doesn’t really matter. Few players will equip Shadow’s Mantle and not also equip Bane of the Trapped. I only did so because Bane of the Trapped hadn’t dropped for me yet this season. Now I’m drowning in the mental quagmire that is deciding which weapon(s) to use with GoD.
Cheerio.