Garona found the [Base of Atiesh] within the corpse of C'thun and brought it back to the surface. While Med'an's powers were truly phenomenal, it looked as though they would not be enough to defeat Cho'gall - now a horrifyingly deformed avatar for the Old God - and desperation set in. Cho'gall began the spell that would summon the Old God to Azeroth and signal the world's destruction. In a desperate gambit, Meryl channeled the fel energy that tainted Atiesh's base to Med'an, who used his powers to cleanse it and strengthened himself further. Furthermore Aegwynns power fueled Med'an even further, and when he touched the base of Atiesh, it reformed. With the combined powers of the Council, Meryl, Aegwynn and the staff of Atiesh, Med'an destroyed Cho'gall, burying him beneath the rubble of Ahn'Qiraj.