Outstanding in his field with ears for him alone

I wear a coat of green armor but have no wars to fight.I drink deeply when it rains but can survive months without a sip.Touch me and I will bite, yet inside I hold a hidden well.

What’s the body temperature of a Tauntaun?

I ask no permission before I descend. I hide sharp edges and blur where things end. I have sheltered kings from winter's bite, And spared their allies from judgment's light. I may silence a mountain beneath silent white, Or smother dissent with a single decree. Whatever lies beneath me, Soon becomes harder to see. What am I?

What do you call a group of killer whales playing instruments?