What can't you kill may be a shorter list.
- Nova
I'd say everything that is bigger than you or by other means very mean *cough*like dlayos*cough*
Anything that is either
a. Frowning at you (Ulbernaut/Maulbernaut)
b. At least twice your size. (Vilenaut/Maulbie/Ulbie)
c. Looks as though it could eat you whole without too much trouble (Imago Consumer)
or d. Has the word "Dlayo" in it's name
Is likely off-limits