You either desire competitive flexibility or are simply priced out of the cards you want
While you need a bunch of creatures and noncreature spells to really take advantage of it (which probably limits it to token decks), it can be an engine that takes over the game in the right deck
If you're interested in bidding on this booster box, the current bid at the time of writing is $6,200+ USD
In fact, youll only want to include a maximum of about twelve such creatures in your deck, because after a certain point going deeper into the mechanic has diminishing returns
The lands are easily the best of them, and Im looking forward to throwing them in a lot of my decks
If you read my The Brothers War Set Review, you may remember how highly I think of this card, as it is largely a better Outpost Siege: even if we whiff, we at least get a Powerstone, which can help pay for Sethrons activated ability, and it doubles the number of cards we see each of out turns