Hearthstone Preparation: keyword from Fall of the Crimson Fort

Since July 7, 2026, the Escape from Crimson Fort expansion has shaken up the Hearthstone landscape with its 135 new cards, disguised minions, legendary outlaws... and above all a brand new keyword that's already generating a lot of buzz: Prepare. Be careful though, this keyword has strictly nothing to do with the old Rogue card "Preparation" that you might know from the early days of the game. Here's everything explained in detail.

What is the Prepare keyword?

Introduced with the 36.0 update on July 7, 2026, the Prepare keyword is a brand new mechanic that lets you reduce a card's cost by "preparing" it in advance in your deck. Specifically, when you have a card with this keyword in hand, you can drag it onto your deck instead of playing it: it is then prepared, immediately returns to your hand, and its cost is reduced by all the mana you spent, plus one bonus point.

Drag a Prepare card into your deck to spend all your remaining mana and lower its cost by that amount, plus one extra point. — Official Blizzard definition

This mechanic radically changes the way you think about mana management: every turn where you don't fully use your curve becomes an opportunity to prepare a big play for later, instead of "floating" wasted mana.

Careful: don't confuse it with the old Rogue "Preparation"

This is THE question that keeps coming up everywhere since the expansion's announcement: is this new keyword related to the Rogue's iconic Preparation spell, the one that, since the very beginning of Hearthstone, reduces the cost of the next spell played by 3 points? The answer is no, absolutely not.

• The old "Preparation" is a card: a 0-mana spell exclusive to the Rogue, which applies a temporary buff to the next spell played in the same turn only.
• The new "Prepare" is a keyword available across all classes, which activates by preparing the card in the deck to replay it more cheaply on a following turn.

Blizzard also deliberately kept the Rogue's historic card as it is in Wild format: the coexistence of these two concepts creates a bit of semantic confusion, but there is no technical interaction between them. A Rogue can obviously play both in the same deck without any problem.

How it works mechanically

The way Prepare functions follows very precise rules that you need to master in order to get the most out of it:

• The trigger: instead of playing the card normally onto the board, you drag it onto your deck.
• The mana cost: you spend all of your remaining mana that turn. You cannot choose to spend only part of it, it's all or nothing.
• The reduction: the card's cost is reduced by the mana spent + 1. A 10-cost card prepared with 6 mana therefore becomes a 3-cost card.
• The return: the card immediately returns to your hand, with its new cost displayed in purple to indicate the persistent reduction.
• Stacking: yes, you can prepare the same card multiple times over several turns to bring it down to 0 mana.

The real genius of the Prepare keyword is that it turns "wasted" mana into a future investment. No more turns where you float 2 mana for nothing: that 2 mana is now worth 3 points of reduction on the card of your dreams.

One caveat, though: a prepared card can no longer be destroyed by effects targeting your deck (it leaves the deck immediately), but it remains vulnerable to Discard effects and hand-control effects, just like any other card.

The key cards to know

Out of the 135 cards in the expansion, around fifteen carry the Prepare keyword. Here are the standout cards you absolutely need to watch.

Purple Code (Mage, 10 mana) — The expansion's signature spell. Properly prepared, it can wipe an entire board while generating several Elementals on yours. A game-changing finisher.

Devin (Priest, 7 mana) — A monstrous statline right out of the gate, even scarier at 3 or 4 mana after one or two preparations in the early turns.

Bone Sawyer (Death Knight, 5 mana) — An off-class finisher that recharges a bit of Armor and combines perfectly with Death Knight's corpse archetypes.

Underground Auctioneer (Neutral, 6 mana) — The must-have neutral legendary: it draws a card for every spell cast the turn it comes down. Once prepared, it turns any spell-heavy deck into a card-drawing machine.

Vanessa the Leader (Neutral, 9 mana) — She summons a copy of every minion prepared during the game. Huge potential in midrange decks that prepare cards early.

Cunning Improviser (Mage, 3 mana) — An early tempo card that gives easy access to Prep archetypes right from the start of the game.

Which classes benefit the most?

Every class gets at least one Prepare card, but they're not all on equal footing. Here's our tier list one week after release:

• S-Tier: Mage and Priest. Their prepared cards have a game-changing impact and fit naturally into control strategies that love to bank mana early in the game.
• A-Tier: Death Knight, Shaman, and Demon Hunter. They get explosive finishers that reward long-term preparation.
• B-Tier: Rogue, Paladin, Warrior, Hunter. Their Prepare cards are solid but less pivotal in the current meta.
• C-Tier: Druid and Warlock. Moragg is interesting but somewhat isolated within its pool of synergies.

Combos, synergies, and interactions

The Prepare mechanic opens up a huge range of brand-new synergies that the community is still exploring:

• Vanessa the Leader combines wonderfully with Prep minions played in previous turns.
• Defias Go-Between (Neutral) generates a copy of a card recently prepped in your hand.
• Cost reduction bonuses (Radiant Elune, cards that manipulate spell costs) apply normally after prepping.
• Watch out for Discard tools from opposing Warlocks and Rogues: losing a card prepped to 0 cost is especially painful.

The golden rule to remember: only prep if you have a concrete plan to replay the card within the next 2 to 3 turns. Otherwise, you're turning a strong card into a mere hand-clogging deadweight with no exit plan.

Is it viable in current Standard?

A week after release, early feedback is clearly enthusiastic. Prep Mage and Prep Control Priest decks are already dominating the top legend spots on Vicious Syndicate, while Prep Death Knight is establishing itself as the surprise of the patch. The mechanic is powerful but comes with a real opportunity cost: you "lose" a turn of aggression to prep, which punishes overly passive strategies against aggro decks like Sewer Hunter or Defias Rogue.

The meta should stabilize around three major Prep-focused archetypes, with a natural counter through tempo/aggro decks that simply don't give the opponent time to set up their big plays. One thing to watch closely in the coming weeks: Blizzard's first balance adjustments, which could nerf the "+1" bonus if the mechanic proves too dominant.

To go further

Want to deepen your mastery of Escape from Pyrewood Fort? Check out our other guides dedicated to the expansion: our full breakdown of Disguise minions, our overview of legendary outlaws by class, and our focus on Bribe cards. Just starting out on Hearthstone? Our Hearthstone beginner's guide and our class selection guide will help you through your first games in the halls of Pyrewood Fort.