Goddammit, it is NOT clear. If it were, we would not be having this discussion.
"Seems clear to me" and "is clear" are different things. The fact is that there is no reason, conceptually, based on the description of the power, for it to affect only living things. Moreover, the power that it is supposed to be modelling in TT does affect inanimate objects. Which leads to the strong suspicion that "creature" is simply a flavor term.
If it did, it would logically, say... ignore artificial armour. It would also be written that it does not affect, say, servitors, or daemons, as does every other power that only affects living things.
Edited by bogi_khaosa