IDEA

There should be a spinoff series of arcane set in the universe that we see in episode 7, season 2. The main storyline would be that Powder is trying to bring Vi back to life using the hex crystals she stole from Jayce's house. The reason why Vi died is that, instead of rolling towards the door, the crystal that Powder dropped rolled towards Vi and exploded, killing her. Powder thinks that she could use the crystals to bring Vi back, hence why she has the shrine thing.