Which link skill to drop?

Is cannoneer worse than keen edge or do you value the hp?

I would test that before making the choice.

I wanted to keep it for the HP since without it I don't think I can tank 30k damage reflect, but I'll check, the 5 ATT is almost certainly going to be more of a range boost than +15 all stats.

and I have my Core Aura locked for like.. another 9 months or something, so I have no reason to get rid of that one (yet at least).