Rotating Game Mode Idea - Despair

A 5x5 Blind Pick skirmish on the Howling Abyss (so matches would be quick). If your team wins, nothing changes. If your team loses, your Champion becomes afflicted with Despair and takes a nerf to their passive. They also get some flavor text showing what the character would think if they lost hope, e.g. "I will never find the Moonstone." Winning a game restores hope, but losing continues to deepen the character's despair, and after a certain number of losses (3-5) the Champion becomes unplayable for that mode, with a note saying something like "This Champion has lost all hope" or "This character has no more will to fight." Surrenders would cause more despair than regular losses.

There'd have to be some mechanism to ensure players couldn't be entirely locked out of the mode. Maybe despair could only affect Champions you own, so you could still play free week Champs.