RIP Radiant Guardian. Wasn't sure at first but as pointed out by others, she killed Sion with her blade, which then (presumably) killed her after resurrecting in his "Sion Returned" art. :
League of Legends: Sion Skins' Review – StrategyZero
AP SION MID! Trying to Make Tilterella Proud 😅 - League of Legends - YouTube
Tahm Kench vs Heimerdinger Counter Build | MOBA Champion
Heimerdinger Guide - THE UNBEATABLE PUSH BUILD | BANNER AND ZZ'ROT : r/leagueoflegends
How would you play against bot lane Heimerdinger? : r/leagueoflegends
Jayce Heimerdinger Bandle Deck Guide • Meta Decks • Legends of Runeterra (LoR) • RuneterraCCG.com
Sion Build Guide : "Slay the strong, trample the weak!"--Sion Guide :: League of Legends Strategy Builds
Norra Heimerdinger Deck Guide • Meta Decks • Legends of Runeterra (LoR) • RuneterraCCG.com
Surrender at 20: 8-3 News : Darius & Heimer Changes, Sion's update, Silly skins, and more!
Heimerdinger Counter Picks | League of Legends Counters | LoL Impact
BeryL showcases his killer Heimerdinger in the 2021 LCK Spring Final | ONE Esports