Look at the quotes for the announcer Kayn. Specificly for the summoner had disconected.
"A summmoner has disconected. Summoner? so they did survive"
this quote is interesting, as it is the first cannon direct reference to summoners since the reboot i think.
what do you all think.
This is still not canon as the announcer is part of the Odyssey skin line, which has ties with the Event Horizon and the Pulsefire skin lines. The Pulsefire skin line is about interdimensionnal travel and does reference an universe in which Summoners exist, explaining why Rhaast, who managed from the Event Horizon universe to the Odyssey universe, is able to reference it. It is not League's base/canon universe though.
Further info, the Wardens and marauders are from the previous universe, since it descended into anarchy after the retcon.
Personally, it's probably an easter egg referencing how so many of us said that the summoner's were "killed" and "deleted" during the massive lore retcon years ago.
Pulsefire Ezreal makes direct references to the Institute of War when he encounters Warden skins and the Marauders. IIRC each is from a universe where the institute of war descended into a civil war and one side or the other came out on top. They could only exist if the Institute did; and judging from Ezreal's shock and sudden fear (I think it's the only interaction he takes even remotely seriously), this is a very bad thing for the multiverse.
