2022-10-07 : If the card in your opponent’s graveyard isn’t a legal target as the ability tries to resolve, it will be removed from the stack and your opponent won’t get to choose a permanent card from your graveyard.

2022-10-07 : You choose the target card in your opponent’s graveyard as you put the triggered ability on the stack. That opponent chooses the card in your graveyard as the ability resolves.