so, a friend of mine and I are wonder, when a creature with regeneration is dropped below -con score in hitpoints, can it be targeted by spells that target corpse...lets use the regen king for example, break out the tarrasque.
No, because regeneration specifically says that the creature cannot die while regeneration is still in effect, so therefore it isn't a corpse.
True, a dead target cannot be the target of spell that would grant regeneration, but a troll has natural regeneration. Technically you must hit it with fire or acid to disable its regeneration. If you do so while its hit points are equal to negative con or less, then it will die.
And it does not qualify as a corpse until it is dead.
For the Terrasque, nothing disables his regeneration and he cannot be killed by any means.
Yes, but regeneration magic can not be applied to creature that's already dead before the magic is cast.so, a friend of mine and I are wonder, when a creature with regeneration is dropped below -con score in hitpoints, can it be targeted by spells that target corpse...lets use the regen king for example, break out the tarrasque.No, because regeneration specifically says that the creature cannot die while regeneration is still in effect, so therefore it isn't a corpse.
I agree, but the OP was asking about a creature that already had regeneration, not something that had regeneration magic applied. So I think the answer is still no.