If I kill some kind of evil creature like a zombie, chuck it into a shallow grave and burn its remains, would casting detect evil and good on the skeletal remains reveal anything?
Or do destroyed/slain monsters immediately stop registering for such effects?
The spell does not specify if the creature needs to be alive, dead, or whole. However, it may cease to be considered a creature if it is dead; I do not know.
The detect evil and good spell description reads:
For the duration, you know if there is an aberration, celestial, elemental, fey, fiend, or undead within 30 feet of you, as well as where the creature is located. Similarly, you know if there is a place or object within 30 feet of you that has been magically consecrated or desecrated.
Additionally, would you know that it was undead? Or just that it is one of those types of monster?
Also, does it remain 'undead'? Once undead, always undead?
I assume this spell only reveals if the monster is one of the types in the list (not which one?), and not alignment like I think perhaps past editions of D&D have done.