Back in my day, we would raid something over and over to just hope for a rare piece of loot or killing mobs over and over to hope to get a card drop to only see it vanishes into thin air failing a capture (Rappelz that's only 4 years ago). We have enough token already, philosophy tomes for i70, mythology tomes for i90. God forbid you have to do a dungeon over and over for a piece of loot.