Panharmonicon V2

Whenever a creature would enter the battlefield,
if it was cast, you may exile it and return it to the battlefield.
Whenever a creature entering the battlefield
would cause an ability of a permanent you
control to trigger, if it was cast, you may pay {2}. If you do, that ability triggers twice.
"It plays a different song for everyone. I was hoping for something other than the McDonald's jingle on loop..."