Question:
This carnal creature will sicken you to your grave
Answer:
Kiss of Death, or French Kiss of Death
Explanation:
This carnal - The Kiss of Death or French Kiss of death is really into kissing! That is carnal. Carnal means to me materialistic, or, if you will, being obsessed with kissing. Kinda like I am with eating people. Hmm...
creature - Hey! Now THERES a hint! It's a creature of some sort.
will sicken you to your grave - They poison you with their kiss of 'death'. Good ol' PSI heal beta should take care of that!