I think the broach of Mind Point healing is good. I didn't think about the combination with the wand of magic and thought there would be only one BP every two turns or one MP every turn. With the Wand of Magic, this slowdown mechanic for the MP healing is also necessary and good - otherwise the additional MP cost added to some permanent effects would be no cost in reality.
Why don't you replace this
You may use one of the following abilities whenever you could cast a spell, instead of using a spell card.
by this
Cast Action:
?
Why do you state this on every card:
This card does not need to be discarded to do so.
Don't you state that the spell has to be discarded on the spell cards?