Anyone who plays Hearthstone is often plagued by the need for more card packs. And sure, it's easy enough to pick them up for 100 Gold a piece, but like Aluneth says, "More! I must have more!"
For those who want more, the Mammoth Card Bundle will be made available with the launch of the 10.2 Update, which is set to hit in February. It will feature ten packs from each of the three 2017 Hearthstone expansions (Journey to Un'Goro, Knights of the Frozen Throne, Kobolds & Catacombs) for $19.99. That's 30 card packs, which is an insane value, given that $19.99 normally only buys 15 card packs. There also doesn't appear to be a limit on how many of these Bundles can be purchased, so anyone that wants to stock up on cards or mana in anticipation of the next big Hearthstone expansion may want to give this a look. It'll only be available for a limited time, though Blizzard doesn't note exactly when the promotion will end.
(Update: There is a limit and it's one Bundle per account, per the Hearthstone website.)
Still want more? Blizzard is planning to fill that desire for at least one Hearthstone player with the Quest for Packs Sweepstakes. The Grand Prize winner is slated to receive 3,000 Hearthstone card packs: 1,000 from Journey to Un'Goro, 1,000 from Knights of the Frozen Throne, and 1,000 from Kobolds & Catacombs. They'll also get the Lich King's Helm, as seen in the various Hearthstone videos scattered around YouTube. Like this one, where he tried to interview for a job with Game Director Ben Brode:
And the winner will also get various Hearthstone apparel knick-knacks.
So looking honestly, winning the Grand Prize seems unlikely. Fortunately, the runner-up prizes seem to be plentiful. The aforementioned Mammoth Card Bundle will go to 1,000 lucky players. And then there are 50,000 players who will get the Mammoth Pack, which includes one card pack from each of last year's expansions. Earning a sweepstakes entry is as simple as completing a Daily Quest, which most Hearthstone players normally do anyway.