3. : 35,30% Crit / 8,18% Hast / 97,07% Mastery
That would be the stats I would choose in your situation. I use the Cocoon to regain extra mana but that depends on your group and your boss. Ursoc is more chain-heal friendly as the spider or the tree. Most shamans tend to have a huge wardrobe and change trinkets and talents between bosses to specialize their play style on the unique abilities of every single boss. Amalgam’s would help you maintaining your heals without the urge to stop your actions (including movement!) while Heightened Senses would grand you immersive bonuses during procs you can not enforce. Naglfar Fare works with your other trinket in the same niche and I would tend to say its the best match in an overall view.