zek247 I'm not sure of your question to be honest. Attunement is our best stat for Judgement Aura because it scales 4 things at once. Maximum Mana, Healing Effectiveness, Stat Scaling, and Area for Judgement. The major boost comes from making sure you hit the boss with volatile reversal. Typically what I'll do is javelin at the boss then walk up and do the full combo with VR ontop of the boss then reactivate javelin to snap back to the boss.
You could replace sigils with pretty much any skill, I would lean away from specializing rebuke or shield rush as they don't have enough benefit from their trees to be worth it. That mostly leaves us with an interesting smite specialization with Fissure (not that great tbh) and some fun shenanigans with Shield Bash. I personally have just left sigils specialized and swap them for rebuke on bosses.