Reward
Step 1 The tomb south-east of Mortha
About 55 squares south-east of the Mortha temple go up the ramp at 31492,32299 and down the stairs at 31496,32299 on the other side. Then take the stairs at 31521,32312 down to floor 8.
Step 2 Down to the burial chamber
On floor 8 walk south-west through the door at 31483,32338 and take the stairs at 31476,32347 down to floor 9. Bonebeasts, ghosts, efreets and marids fill the halls; liches, green djinns and the pharaohs Rahemos and Mahrdis wait near the chests.
Step 3 Three chests
Three chests stand side by side at 31475, 31477 and 31479 (y 32380, floor 9): a dragon lance, a war hammer and a giant sword, each from level 50. Each chest opens once per character, so one character can take all three.