Getting a dragon or crystal pickaxe can be a tough endeavor, and if you have completed Song Of The Elves and the elf questline on some lower levels, you might not have the skills needed to get these special pickaxes. You don’t need them, especially because most of the damage is pre-done for you. No matter what you do or how you hit Zalcano with the imbued tepera, it will deal 10 damage. Once you crack her armor open, you will be able to strike at her with your pickaxe. Now the dragon and crystal pickaxes do +1 and +2 extra damage respectively to her, but you don’t need them. Just equip the best pickaxes you have and most of the time that should be enough.