# Drain resistance
Drain resistance – or level drain resistance – is a property that resists attacks that reduce experience level or monster level. It can be possessed by both players and monsters.

Contents

1 Effect
2 Sources
3 Monsters with drain resistance
4 Messages
5 Strategy
6 Variants

6.1 SLASH'EM
6.2 FIQHack

7 References

Effect
Drain resistance prevents the following attacks:

The drain life monster attack.  All V vampires and W wraiths have this attack, as does &amp;&nbsp;Demogorgon. If the compile-time option SEDUCE is not enabled, &amp; foocubi become level-draining monsters as well.
The drain life ability of The Staff of Aesculapius and Stormbringer.
Directing the spell of drain life at oneself or a monster.
Being seduced by a &amp; foocubus and getting a negative effect, with the compile time option SEDUCE enabled (the default). This is one of five possible negative effects.
Suffering a god's anger through incorrect prayer or sacrifice. This is one of many possible effects.
Sources
Drain resistance may be acquired by:[1]

Wielding Stormbringer, Excalibur, or the Staff of Aesculapius.
Polymorphing into a monster with drain resistance.

The following information pertains to an upcoming version (NetHack 3.7.0). If this version is now released, please verify that it is still accurate, then update the page to incorporate this information.

From NetHack 3.7.0 onwards, Black dragon scale mail and Black dragon scales also provide drain resistance.
Monsters with drain resistance
Drain resistance is intrinsic in:

demons.
L M W V Z &nbsp; undead.
lycanthropes – in both human and animal form.
&amp;&nbsp;Death.
Messages
Drain resistance usually acts silently. Only the lack of level drain messages indicates it is operating.
When consorting with a foocubus, the message "You have a curious feeling" indicates that you would have lost a level, but the loss was prevented by drain resistance.

Strategy
Drain resistance is not especially important; this is because monsters' level drain attacks are subject to magic cancellation. By the time such monsters are encountered, most players will have a magic cancellation of 3 and a successful drain life attack will be extremely rare. Even then, a single point of experience&nbsp;is enough to regain the occasionally drained level.

Variants
SLASH'EM
In SLASH'EM, drain resistance also protects from the wand of draining. This makes drain resistance much more important, particularly in the Guild of Disgruntled Adventurers.
Drain resistance can also be acquired by:

Wearing deep dragon scales or deep dragon scale mail.
Wearing an amulet of drain resistance.
Wielding the Hand of Vecna
Starting the game as a lycanthrope or vampire.
Being an undead slayer or necromancer.
SLASH'EM introduces the following new drain-resistant monsters:

adult deep dragons (but not babies)
undead slayer player monsters
All the new undead, lycanthropes and demons
FIQHack
In FIQHack, drain resistance is also conferred by wearing black dragon scales or armor.

References

↑ resists_drli in mondata.c

This page may need to be updated for the current version of NetHack.
It may contain text specific to NetHack 3.4.3. Information on this page may be out of date.
Editors: After reviewing this page and making necessary edits, please change the {{nethack-343}} tag to the current version's tag or {{noversion}} as appropriate.