Wow! Some champions talk to each other!! :)

So I was going as a support bot, and before minions spawned we were together standing, and then our champions talked to each other one line each, never heard it before, so i guess only certain champions do this. My friend had it too as Vollibear he said to Zilean "Your time has come, chronokeeper" ^^ Does anyone have full list of dialogues? And which champions do this? Amazing!!
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