Mountain nymph

The Mountain nymph, represented by n, is a physically weak opponent with a devastating theft attack. If she gets next to you, she can seduce you, steal any item from your inventory, and teleport away.

YASD by nymph

The beautiful mountain nymph seduces you and you start taking off your armor.
The mountain nymph stole a +0 wakizashi.
The mountain nymph stole a lichen corpse
The mountain nymph stole a +0 katana.  The mountain nymph stole a +0 yumi.
The mountain nymph stole a spiked wand.  The mountain nymph stole 38 +0 ya.
The mountain nymph zaps a spiked wand!
The mountain nymph has made a hole in the floor.
The mountain nymph falls through...  You can move again.

(Note that it is almost impossible for a nymph to steal such a large number of items in one turn, but she will happily steal two or three).