Answer: The champion who says “The first time I returned from the void, it was to save me. Now it’s to save them” is Kai’Sa, Daughter of the Void. Of course it is. You might have been thinking Kog’Maw ...
Epic rarity (Purple) versions of the Fire Oni Mask and the Void Oni Mask can be found when ... he will only drop a random Mythic weapon and eventually respawn after Storm Circle 4 in his arena ...