Riot said the things in Legends of Runeterra were canon. The fact that something like this currently exists in Runeterra and could potentially affect any character we know makes me want to really know more about the story surrounding it.
No, they said things in Legends of Runeterra had the potential to be canon.
Can already do something similar albiet with magic, Hextech is just magic modified into a machine form for normal people use. Not that far fetched.
The stuff in Legends of Runeterra is not directly canon.
It just has the potential to be canon. Basically everything in Legends of Runeterra is treated the same as the quotes from champions towards each other in League of Legends. Just because they say something to each other does not mean they actually met in the lore. These quotes are just a "what if" situation if the opportunity would arise some day that these champions are encountering each other.
Same for Legends of Runeterra. Everything happening in that card game could potentially happen, but it not necessarily has happened in the lore yet.
A Rioter directly confirmed when I asked him that we should treat them the same way like the quotes from the champions in the game. Potentially canon, but not necessarily canon yet.
