The Tree of Portals is a tree in Pixie Village. It appeared in the Winx Club: The Secret of the Lost Kingdom. Inside
300px-Lockette,Bloom y Flora en el Arbol de las llaves
this tree all keys of the Magic Dimension can be found. The Winx (except for Bloom, because her Enchantix is incomplete) enter the tree in their Mini Winx, along with Lockette, Amore, Tune, Digit, Chatta, and Piff. They are trying to find the key to Obsidian. Lockette finds it with her portal powers.