edit: Not an issue, works correctly.
Lost both of my BSZs because Olivia’s discard triggered twice…
Olivia triggers any time a creature you control enters the battlefield.
Hard to tell here, but if you stole Olivia, and then cast the djinn from your own hand, then her effect would trigger twice, and therefore this is Working As Intended™.
Oh I think you’re right. I was thinking her effect was when she enters but it is anything enters. No issue here other than operator error. 