Sprite's Corruption

Your good nature has gotten the better of you too many times, now something else, something darker is sprouting in your heart . You gain the following benefits:

• Increase your Dexterity and Wisdom score by 1, to a maximum of 20.
• While in combat, as a bonus action, you can attempt a DC 10 Wisdom check and expend a corruption charge. Succeeding a DC10 Wisdom Check will allow you to convert from "Pixie Mode" to "Sprite Mode" and vice versa a number of times equal to your Wisdom modifier plus 2 per long rest.
• When your hit-points are reduced to 0 you automatically revert back to your original form without expending a corruption charge.
• In "Pixie Mode' you are kind natured and value friendship like all the good fairies do. You are curious yet fear combat.
• In "Sprite Mode" you are more jaded and hostile. You do not fear combat but relish in it. You see allies and friends as merely tolerable acquaintances, you are indifferent towards those that show you no hostility.