The next spell you cast this turn costs (3) less.
"Be Prepared" - Rogue Motto
 How to get
Like most rogue spells, Preparation's cost makes it ideal to prime a combo card; for example, combined with Headcrack, both cards fulfill their respective potential. As a free spell used in combination with other spells, it is excellent for use with cards such as Violet Teacher and Gadgetzan Auctioneer, and in such decks is best saved for when one of these minions is on the board.
This card is, however, very situational, since high cost rogue spells are few and usually oriented towards the late game, when casting costs are less of a constraint. This, added to the rarity of the card, makes it a weak cousin of the druid's Innervate.
 Patch changes
- Patch 22.214.171.12490 (2013-10-02): Now reduces cost by (3), up from (2).
- Original: The next spell you cast this turn costs (2) less. [0 mana, Epic]