You allow Halaetan Gatestone to examine your Blighted Mana Crystal.
You hold the Blighted Mana Shard against the gatestone to no effect. You get the sensation that simply trying to use the gatestone with at least 20 Blighted Mana Shards in your pack will activate its powers.
Giving 20 Blighted Mana Shards to a Gatestone
You hand over 20 of your Blighted Mana Crystals.
The Gatestone teleports you into the lair of the Linvak Blight Lord!
You hear a sibilant voice whisper in your head, "Slay the desecrator of this sacred place and present its head to the altar within to receive your reward..."
A voice whispers in your head, "Ashes for ashes, blood for blood... Give us the head of the desecrator and the Wheel shall turn anew."
Giving Head of Blight Lord to Altar
You give Aerlinthe Altar Head of the Aerlinthe Blight Lord.
You present the head of the Blight Lord to the Altar, and the device seems to absorb the foul, rotting head into itself with an unmistakable air of satisfaction. There is a flash of light, and you find that something has been dropped into your pack...
Aerlinthe Altar gives you Mana Forge Key.
You've earned 65,782,362 experience.
The altar whispers in your mind, "You have cleansed the taint... for now. Receive your reward, and be on your way..."