ToME: the Tales of Maj'Eyal

Situation: Player go down stairs and find himself sitting on a drake hatchling on the stairs. ( This is not a typo, I am actually damaged by the amount logged. )

[LOG] Multi-hued drake hatchling uses Ice Claw.
[LOG] Multi-hued drake hatchling hits Blademaster for #1133F3#73.20 cold damage#LAST#.
[LOG] Blademaster hits Blademaster for #YELLOW#5.79 light damage#LAST#.

EDIT: But when I leave the stair tile, the drake hatchling is no where to be found.

That's what you get from naming your character 'Blademaster'

You need to move at least two squares away from the stairs. That will prompt the hatchling to follow you, and you can then smite it