Do passive auras like Sona's grant assists?
If Sona grants an aura to an ally that gets a kill, will this count as an assist? I'm assuming she hasn't changed her auras during the fight.
Do items that grant auras act the same way?
Solution 1:
According to the LoL wiki here Assists are granted when someone ACTIVELY does something to help for the kill. Healing counts, but passive auras do not. If they did I would think Janna would have infinite assists because of her passive. I believe this is also including things such as Aegis and Life steal auras don't count.