Also, because its just a concept.. and if +3 mana seems like too much... limit it to +1 mana to start off at 1 week activity for example.. a little less impact, but scalable if needed...stats/durations can be modified to dial it in for an exciting change! For this to be implemented and put more on the teams plate is another story...but some good food for thought!
RE: Seeking the Missing Pieces