It was the Wishy Stone. This stone looked exactly like Jon's previous stone, but it has a difference it was softer and covered in a red slime.
This stone worked the same way as Jon's stone except you had to say "I Wishy" instead of "I Wish"
In the long run this would be safer but until Jon any Karyn figured this out there would be some problems especially since when the phrase "I Wish" was used, the user would wind-up coated in slime, like what covered the stone.