I can't get past the trees!

Hint 1 of 10:

I take it you mean the Christmas Tree Monsters.

Hint 2 of 10:

Did you check the "Legends and Lore of Quendor"?

Hint 3 of 10:

While there aren't any caterpillars in the game, perhaps you can use the
powers of Time and Magick to create one.

Hint 4 of 10:

Don't read on until you have met the Implementors.

Hint 5 of 10:

The butterfly can found in the Fields of Frotzen.