Kamen Rider Wizard S01 E51 The Last Hope

"The magical rings known as the Wizard Rings. They shine on both hands of the modern mage as he changes despair into hope."

With Gremlin in possession of the Philosopher's Stone, Koyomi dies. However, Fueki says that the light in Haruto's heart is the true Philosopher's Stone. Meanwhile, Gremlin, now evolved, goes on a rampage, and Kosuke cannot battle to save anyone or even himself from the monstrous Phantom.