The Pet of seasons token is a tradeable discontinued item made from combining the Pet of Summer, Pet of Autumn, Pet of Winter, and Pet of Spring by bringing them to Lady Niya, located southwest of Varrock. It could've also be obtained as a very rare reward from Treasure Hunter. It can be activated to unlock the Pet of Seasons. If you activate the token, it will be consumed.
The token and the materials to make it could only be obtained on Treasure Hunter or from training the associated skills from 8 October 2015 to 14 October 2015, however until 28 October 2015 the components could still be combined and traded, after which date they were to be removed from the game.
Items of Seasons