生成卡牌 (EN:Generate ) 效果是一种卡牌异能， 即制造出新的卡牌并将其置入玩家（可能是敌对玩家）的手牌的效果，比较罕见得在一小部分卡牌中该效果是将新的卡牌置入牌库。They may generate entirely new cards, or combine with a copy effect to generate copies of existing cards. Discover effects incorporate a generate effect for the chosen card, while Summon and equip effects are essentially generate effects which place the generated minion or weapon directly into play, without passing through the player's hand.
Generate effects often provide the only means of obtaining uncollectible cards like Spare Parts, Power of the Horde or even Burrowing Mine, but can also create collectible cards. Many generate random cards from a pool of possibilities. Cards created by generate effects usually display the text "Created by [name of card]" when played by the opponent or moused over in the history.
Generate effects are distinguished from card draw and put into hand effects which draw cards from the player's deck; from Summon effects which summon new minions directly onto the battlefield; and from equip effects which directly equip the hero with new weapons.
- Generate effects cannot create cards in a player's hand if the hand is already full (10 cards). Effects which generate multiple cards, such as Thoughtsteal, will generate as many as possible without exceeding the maximum hand size. The same is true for generate effects which shuffle cards into the player's deck, although the deck maximum of 60 cards means this is rarely a concern.
Because they do not draw from the player's deck, generate effects can be very useful for gaining card advantage, and provide an alternative to card draw for refilling the player's hand.