Lunamoon
The second half is located slightly below and to the right of the second Necromancer castle, to the right of the Fountain of Luck.
alexsandr77
The fourth hero is Ornella. You need to talk to the spirit standing at the garrison guarding the Holy Flame. He will give you a quest - to kill a group of stalkers and sons. After killing them, the spirit will unlock one of the portals. I advise you to take tree creatures - a couple of levels of Arantir won't hurt.
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