This downside for the casting player results in the cards being extremely powerful for their invested mana cost
The Ring also tempts you, but it's a mechanic that, in my opinion, does not do much in a multiplayer game
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The last few years have seen a sequence of printings and metagame shifts that have brought discard decks back into the spotlight across multiple formats and even with the recent banning of Grief, they still have plenty of momentum left
When you consider that rares and mythics are far more valuable than commons and uncommons are, which are pretty easy for everyone to access, in practice, this means that for every pack of The Brothers War you buy (assuming you eventually buy 10 to get the Golden Pack), you are essentially getting 1.6 packs worth of value, making Golden Packs perhaps the most generous improvement to the Arena economy ever