They said that you need to drain a relatively big mob to gain
"Drain Enemy" guild quest of channellers. Here is what I did. :)

--

You are in a small, gloomy cave. Blood and entrails cover the whole floor
making you shudder. Over one corner you see a little desk. Along the walls you
see rows and rows of lockers attached, some still dripping blood. A large
torch attached to a wall gives off gloomy flickering light which gives the
room an ominous feel. Behind the desk you notice a dark hole which seems to
carry an awful smell...
Commands: sell corpse, list, buy <locker number>
Obvious exit is: south.
Mortis stands here behind the desk (almost undead)
H:280/280 [] S:884/884 [] E:232/236 $:736 [] exp:2865 []
Prometeus [fc+]: tell it to the asshole hes the one who jumped on me and tanta
H:280/280 [] S:884/884 [] E:236/236 $:736 [] exp:2865 []
You start chanting.
Drain enemy: ######
Ggr [report]: #6
Drain enemy: #####
Drain enemy: ####
Drain enemy: ###
Drain enemy: ##
Drain enemy: #
!! Spell took 6 rounds!
You are done with the chant.
You extend a finger for focus and cry out 'enfuego delvivendo'
You hook your finger and drain a line of green energy out of Mortis into you.
Congratulations! You have just completed Drain enemy!
Mortis writhes in pain! That must have hurt badly!
*****************************************************
That really HURT!
You wish your wounds would stop BLEEDING so much!
You are no longer stunned.
You fall unconscious from the pain.

You die.
You have a strange feeling.
You can see Death, clad in black, collect your corpse.

This world is mostly marsh, rich with wildfowl and tree-covered hummocks.
Unlike other marshes, this one is free of pestilence and bothersome insects.
Very little is known of it, save that there may be realms in the higher
grounds around its edges.

Welcome to HEAVEN. You can now enjoy the land of fertile richness and
unsurpassed natural beauty, as you are waiting to be revived from your
non-corporeal state to normal character. You may ask for a resurrect. You can
use 'ghost' channel. If you do not get resurrected you may 'pray'. Type accept
for help about accepting reincs/resses. You can also see help pages by 'help'
command.
There are no obvious exits.
H:1/266 [-279] S:884/827 [] E:236/225 $:736 [] exp:2865 []
You are a ghost. You may use ghost channel or 'pray' here.
You are a ghost. You may use ghost channel or 'pray' here.
@Demicore eyes you suspiciously.