To be more specific: after reading multiple walls of text in this thread Punf fights the rulebook
especially the part about timing and about fast triggers, my interpretation of the rules is:
You cast TD and start to progress it.
You return the unit to your hand, second chances triggers.
As second chances is a fast trigger, it interrupts the progressing of TD.
The unit does return to hand and immediately returns to play.
Second chances is progressed so the game proceeds to progress TD
TD checks whether you returned the unit to hand and realizes: the unit is still in game, so the modal second part of TD does not trigger.
Is this interpretation wrong? The replies so far didn’t make me change my mind as they don’t really explain why my interpretation is wrong.
TBH: I would prefer this interaction to function that way, it is simply awesome and would lead to a very well deserved win for Dwarddd. It just doesn’t fit my understanding of the spirit of the game about rules. In my understanding TD’s intention is to check whether the unit actually returned to hand and nothing else.