This makes a certain amount of sense
Yes, this is another trick to get around indestructible
Duplicates were traded in schoolyards , while collectors hunted for the rarest cards to complete their collections
If some of the targets are illegal as the triggered ability tries to resolve, the original division of damage still applies, but the damage that would have been dealt to the illegal targets isn't dealt at all
With some careful deck building (mostly playing some big card-draw spells you can cycle into with Unpredictable Cyclone to make sure you always have some cycling cards in hand), you should be able to mostly play your entire deck in a single turn by cycling, casting stuff (including card-draw spells) for free with Unpredictable Cyclone, drawing into more cycling cards, and cycling them to trigger Unpredictable Cyclone against and again until you've essentially cast your entire deck
Considered the holy grail of Pokmon cards, the Pikachu Illustrator is an incredibly rare trading card because it was never mass-printed to sell
