I think charm isn't quite playable because of the cost. Any of those abilities alone for cmc1 would be good, but at ...not really sure what deck wants to hold that mana open to counter a sorcery so the first ability is useless, and the other two just aren't powerful enough. Maybe it can find a place in BUG control, since the last mode can act as a pseudo cantrip or punish someone for hiding cards with Brainstorm. Personally I'd rather have just the last mode at .