Was observing the change from the first encounter towards the last and noted that the 'At-Will 2' went from: Heal (self/others) > Damage > Damage.
As an suggestion, it could be nicer if it went like: Heal (self/others) > Damage > Heal & Damage (self/others [with an condition]) (like ex.: Sap Warmth wich is also related to 'storms' in an sense, such a thing would also simulate succubus type of life draining).