Dracomeander said:As far as I know, temporary hit points don't stack. Only the largest remaining pool is factored in. This means if you have temporary hit points from a source like Vampiric Touch and you use another Vampiric Touch, you compare the remaining temp hp from the previous casting to those you receive from the newest casting. If the newer casting provides a greater total you get that, otherwise the temporary points are lost/wasted, but the damage you did is still valid.
Now temporary boosts to Constitution are not sources of temporary hit points. They are a boost to the inherent toughness of the being. Any damage taken while the Con is boosted carries over to the being when then boost ends. This is why it is dangerous for a barbarian in rage. If he has taken a lot of damage while raging, he may need to be healed at least partially before the rage ends or he could just drop dead when the rage fades away.
Gaiden said:This may seem like a semantics issue but I always read temp hit points overlapping rather than stacking, such that if you had said two vampiric touches, you would have temp hit points from both, but they would overlap so that if you took 5 pts of dmg you would remove 5 temp hit points from both spells.
This matters because in the context of spells such as aid, hero's feast, etc. If you are hit with an area dispel (or a targeted dispel that doesn't get every spell for that matter), you still may have temp hit points rather than losing them because 1 spell would still be up that gave them to you.
Mahali said:And they don't stack or overlap at all from the same source.
Rkhet said:Ah, but that means with Innate False Life I could gain 10000 HP in a single hour...
Rkhet said:Does it stack? How does it stack?
Dracomeander said:As far as I know, temporary hit points don't stack. Only the largest remaining pool is factored in. This means if you have temporary hit points from a source like Vampiric Touch and you use another Vampiric Touch, you compare the remaining temp hp from the previous casting to those you receive from the newest casting. If the newer casting provides a greater total you get that, otherwise the temporary points are lost/wasted, but the damage you did is still valid.
Gaiden said:This may seem like a semantics issue but I always read temp hit points overlapping rather than stacking, such that if you had said two vampiric touches, you would have temp hit points from both, but they would overlap so that if you took 5 pts of dmg you would remove 5 temp hit points from both spells.
Mahali said:And they don't stack or overlap at all from the same source.
Hypersmurf said:Rkhet said:Ah, but that means with Innate False Life I could gain 10000 HP in a single hour, and then, if I have Cosmic Connection, burn it all in a single spell. It'd kill most gods.
It depends if you consider using the ability twice to be like casting the spell twice or not.
If so, then "nor would the effects of two vampiric touch or aid spells stack" prevents you getting your ten thousand hit points.
-Hyp.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.