hero skill pixie polymorph

Hero Points: 2 - 4

The Hero can cast a type of polymorph on themselves to become a creature they have seen before and who's CR does not exceed current player level. If player level is equal to the creature's CR, this spell consumes 4 hero points and the player must roll a luck check.  On any roll under 5 or lower they polymorph into a goblin instead of the intended creature. A creature that is 1 CR less than player level will be transformed into without a check, but take 3 hero points. Any creature 2 CR or lower than players current level will take 2 hero points. 

• Current Player Level:    4 Hero points + DC 5 luck check. 
• Player Level - 1:             3 Hero Points
• Player Level - 2+:           2 Hero Points