Dungeon Magic: Sword of the Elements/Sword of the 3rd element

The Dark Forest
After using the sword of the 2nd element, visit all the towns and talk to all the people. They will direct you to Gran, north of Granville. There, people say that the sword of fire is in the dark forest, to the north of the village.

There are two special locations in that area: a purple crystal in the forest and the "Fire of the Serpents" beyond it. If you check the map (faerie spell, e.g. 2-2-2), you will see that the purple crystal conceals a chest.

How to access it? You can imagine that the plot of the game forces you to do things in order. Use the last rune set you obtained: the faerie/spirit runes; in particular, remember that single-rune spells are attack spells.

Once you got the sword of fire, bring it to the "Fire of the Serpents" to charge it

The sword of the third element
Bring the charged sword of element to the wizard in Gran. In the unlikely case you started the game with fire magic, the sword of fire will stay in your inventory.

Fire magic is almost useless: it can only be used for double-edged damaging spells (to the enemy and to yourself), but any physical weapon is more convenient.