Since the aura of a storm herald can be cast every round, can the temporary HP stack? So round one 2 HP, round two 4 HP, and so on.
Temporary HP don't stack. If you have temporary HP and receive some additional temporary HP, you choose which to use.
Thus if you had 2 from round one and reactivated round 2 without taking damage, you would still have 2 temporary HP. If you then took a point of damage, you would have 1 left over. Round 3 activation, you could choose to keep the 1 or go with the 2.
Since the aura of a storm herald can be cast every round, can the temporary HP stack? So round one 2 HP, round two 4 HP, and so on.
Temporary HP don't stack. If you have temporary HP and receive some additional temporary HP, you choose which to use.
Thus if you had 2 from round one and reactivated round 2 without taking damage, you would still have 2 temporary HP. If you then took a point of damage, you would have 1 left over. Round 3 activation, you could choose to keep the 1 or go with the 2.