Sylas vs Sylas @Riot real question.

They fight each other, they have ability to steal an ultimate. Sylas uses his ultimate on Sylas that steal's his ultimate, so he uses that ultimate which is to steal an ultimate, which he stole that ultimate from Sylas that steals ultimate. Now he is using his ultimate that steals an ultimate that steals an ultimate that allows him to steal an ultimate. So in theory you can have a forever ultimate that steals ultimate from each other in a never ending chain that steals ultimates. o.o...[zombie-brand-mindblown]

UNLESS Sylas steals an ultimate that stolen an ultimate from another champion does he then steal the ultimate that was stolen from that other champion or he stills the same ultimate that steals an ultimate.