You target an opponent when you cast Shrouded Lore. The opponent chooses a card in your graveyard as Shrouded Lore resolves. After that choice is made, you’re given the option to pay . If you do, the targeted opponent must choose a different card, if there is one. (If there isn’t one, this part is skipped.) Then you’re given the option to pay again. As long as you keep paying , the process continues. As soon as you decline to pay , the last card that was chosen by the opponent is put into your hand.

The spell has no knowledge of cards chosen for other spells named Shrouded Lore.

This is the timeshifted version of Forgotten Lore.