With the Maiev Blink ability, she can teleport to unreachable by others places or behind doors. There are 10 places in the Tomb of Sargeras, where only Maiev can reach and every place hide one of 10 Shadow Orb fragments. The Shadow orb will remain as one item and will increase power with every new fragment found, giving damage and armor. Eight of these fragments should be not hard to find, following the restoration runes and using the Blink ability. But two of them remain hidden for this adventurer.