Once you've got an idea of the best MTG mana ramp cards, you might also want to check out the best MTG commanders, and the top MTG planeswalkers, to continue building up your deck
That said, Possibility Storm was mostly unplayable from a competitive perspective because the deck-building cost was too high, until the right support mechanic (adventure sorceries) came along and made it into the centerpiece of a legitimate deck, so it might just be a matter of time until something breaks Unpredictable Cyclone as well
It'll either be an archetypal staple or see no play whatsoever and there's likely not much potential in between
It might be a gift, you might be new to MTG and want to build a collection, or you might want to boost your EDH deck Before buying any pack, you need to consider a couple of things
Also, if you have no cards in hand when it resolves, you simply draw a card