Boss 1 - Isvítha the GluttonousThis boss is a dragon!
Everyone except the tank should stand in this blue icy area in the snow near where the boss comes out at the back of the "room." I've marked this area with a red circle! The tank should be with the boss (green).

If one tank can hold everything, great! If not, have a second tank control the adds.
The boss occasionally puts a purple eye on one player and chases them. If you get the eye, run in circles around the blue icy area where everyone is standing. If the boss catches you, you will be gobbled up (=one-shotted)!
Sometimes, the boss will do a belly flop on the group. If you are under her, you will die!