Lord of Charms. Finding the Path.
Elemental Balance. Cursed Land.
Reconnaissance. Unraveling the Secret.
Exile. Lord of the Elements.

Check skillwhill to see how to get all these skills. Run to the mentor in the lands of the dwarves (you can get to them through a portal in the king's mausoleum, which is located north of the forest lands), change the skills with the mentor, then go to the mage near Shaiharadia, teleport to the Path of the Abyss, go straight - lights with the inscription "Follow the Rainbow" will light up - follow the lights, maintaining the order of colors - "Red--->Yellow--->Green--->Blue--->Repeat", pass through the Path of the Abyss, change all the skills back with the mentor standing behind it, teleport to Dragon Mountain, and kill the boss.