What rule are you referring to here? Empowered Evocation applies to one damage roll each time you cast an evocation spell. There is no mention of only allowing this ability to be used once per any form of rest.
How does magic missile work with empowered evocation?
But with Magic Missile you apply Empowered Evocation to it’s one damage roll (1d4+1) and then have each missile hit whatever they’re going to hit. With great power comes absolute corruption.
How does the evocation Wizard’s empowered work?
Magic missile is an odd cat as it is a targeted spell with some of the properties of an AoE. But the rules still function normally when you add a little logic and don’t intentionally try to break the game. For every instance of Empowered Evocation, excluding magic missile, no target will ever take that damage more than once per casting.
When do you add intelligence to an evocation spell?
Beginning at 10th level, you can add your Intelligence modifier (minimum of +1) to the damage roll of any wizard evocation spell that you cast. The damage bonus applies to one damage roll of a spell, not multiple rolls. This damage is fantastic for quite a number of reasons.
Is there a damage roll for empowered evocation?
Thus any spell damage bonus from an ability such as Empowered Evocation (PHB p.177) applies once to the damage roll, but that damage roll is applied for each missile. Jeremy Crawford has tweeted on this and according to him it is added to each bolt no matter how many targets.
What happens when you cast an evocation spell?
When you cast an evocation spell that affects other creatures that you can see, you can choose a number of them equal to 1 + the spell’s level. The chosen creatures automatically succeed on their saving throws against the spell, and they take no damage if they would normally take half damage on a successful save.
