When it is played the targeted opponent has to sacrifice a creature, discard three cards and lose five lives, all in one go
For example, if you control The Ozolith ("Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith.") when Sin's last ability resolves, you'll put the appropriate number of each kind of counter onto both The Ozolith and the target creature
Korvold, Fae-Cursed King Korvold, Fae-Cursed King is one of those commanders that turns every small sacrifice into pure value
* Photoshop or GIMP
Your Chance Rewards consist of Shinedust, Shop Tickets, and most importantly, Promo Pack A
There are also probably plenty of eBay auctions going on right now where counterfeit cards are being sold as legitimate playsets