Got a kooky one.
Let's say I have a deck with 2 cards left in it--2 Afterglow. And in my hand is a 3rd Afterglow and a Serial Spell.
I use the Afterglow from hand and chain Serial Spell. Since Serial Spell is a different name, I'm pretty positive that it bypasses Afterglows "once per duel" clause and it should be good to go.
So now all the Afterglows get banished.
Does Serial Spell get banished too?
Do 2 Afterglows go back in the deck? Or Serial Spell and an Afterglow?
On my next draw phase, do 2 instances of Afterglow go off?
Does the top card get revealed twice? Or the top card and the card underneath it--which should be 2 Afterglows?