The design process of this card was pretty straight-forward, honestly. I was looking through the cards in my peasant cube to find room for the new [[Mocking Sprite]], when I glanced at the always-reliable [[Warden of Evos Isle]] and thought "Wouldn't it be cool if I could get the effects of both this cards in just one?"
Agreed, the inspiration cards are already plenty good for the cost. If you didn't want to go into another color you could cost this at 3U or maybe 1UU.