How do I get into the village?

Hint 1 of 6:

There's a green blob in your way!

Hint 2 of 6:

Have you tried talking to it?

Hint 3 of 6:

It wants you to perform a shapeshifting task.

Hint 4 of 6:

You're the King, not a shapeshifter!

Hint 5 of 6:

You don't know how to perform a shapeshifting deed!