Morgoth and Doriath

[Raynor]

Originally Posted by Macalaure

We know that the Girdle could only be breached by someone of greater power than Melian. This rules dragons out

Hm, is there any specific reason for that?

Originally Posted by Macalaure

You're right, but it was not the power of the Silmaril that enabled him.

It was not the Silmaril that increased Carcharoths power, even though it made him much more frightful than before, but because he carried the Silmaril it became his fate to enter Doriath.

In my opinion, this quote cuts both ways. It can even be interpreted that fate simply "directed" Carcaroth's direction/intention, while it was only the silmaril that increased his power.