Riot's Narrative: "We did the retcon in order to open the characters up to more stories."

"For the purpose of opening up Amumu to more stories, we felt his angle as the only undead creature in existence who isn't a ravenous murderbeast or a mysterious ghast serving an ancient broken king from a fallen kingdom across the sea made him far too static. It opened him up to such opportunities as meeting people and forming bonds, discovering things about himself and his condition that potentially involved other people, and generally let him interact with the surrounding world in ways other than decay and murder.

Therefore we are going to open up his story by turning him into the "creepy child" horror trope that forbids him from interacting with the world around him in ways other than decay and murder. We feel it really opens him up to all the random decay and murder-related storylines. Also, creepy children obviously sell, given that they're present in 85% of horror movies."

Not that the video isn't pretty (it really is), but what it does to Amumu's future as a character is upsetting. He no longer has a reason to interact with anyone or anything because even if he does, he will accidentally murder everyone involved. He's no longer really a character, unless you count every ghostly crying child that randomly shrieks and explodes in old Ghostbusters cartoons to be characters.

Also, he adds yet another apocalypse to the long-suffering neo-Valoran's list of world-spanning disasters. Between the devastating mage war between Azir and Xerath, rabid bugbear infestations, a civil war in Freljord that has potential to grow out into the summoning of Cthulhu, an annual zombie apocalypse and Amumu randomly exploding cities, how is Valoran still standing?

I still struggle to figure out who this new lore is supposed to interest as lore, as opposed to as pretty pictures. It's basically an endless barrage of Rule of Cool promotional materials that focus so much on "Wow look at how awesome / cool / sad / full of feels / pretty pictures this is." that they forgot to be an actual story that doesn't collapse the second you expose it to outside logic.

Will a day come when all of it finally makes sense in any shape or form?