I'll be talking about a boss in Sacred 2 called a forest guardian.
He is bigger than any other big trees
The forest guardian is in the dryad island(however I forgot where was the boss location).
Abilities:
Root spell (when you meet him he will use the spell)
Healing (quite complicated for me,every time I'm about to beat him and always healing when his health is low)
And also : if you are a shadow warrior use rallied souls,so they will help you defeat the big tree.
If you're a high elf pyro, cast meteors if you have the stun modification
Write down things what I forgot and tell what you hate about the boss