Shapechange Master

You have trained extensively to change your own or somebody elses shape, gaining the following benefits:

• Your transformations last up to twice as long.
• The maximal Challenge rating of creatures you can transform into increases by 1.
• Choose one of the following: Dragons, Elementals, Fey, Giants, Monstrosities or Plants. You can shapechange into any of these creature, abiding by your other limitations.