I don't understand how Emerald Bracelet works. Is it to give you more actions per turn, or is it to charge manastones?
It gives you Energy, which is the number in the orange circle that dictates how many standard actions you can take in a given Turn.
Emerald bracelet gives you an extra energy/action for each curse next to it, but only for the first turn of the battle.
This right here, it's a one turn thing, so make sure you use your first turn to it's fullest lol.