309 legendary warlock bond. Very useful considering when you switch to future war cult (Because apparently bungie wants to force us to love them) your current exotic class item for New Monarchy/Dead orbit (DO in my case) has its light level negated and you can no longer wear it for the week. I think the possibility of 310 legendaries from the nightfall are a very good prospect. Considering we can get ghosts too. This allows us to level up the harder items to level up (With no current exotics to obtain at 310- Class item, Boots, and ghost)