Sacrifice

Once per turn, you may sacrifice a scroll to gain one of the following:
 * An extra resource of your choosing, which also increases your max. resource count for that type by 1.
 * Immediately draw two new scrolls from your deck.

Examples
Ex. #1 : If you sacrifice a scroll for Growth, then you will have 2/2 Growth resources. If on your second turn you sacrifice another scroll for Growth, your resource count would be 3/3.

Ex. #2 : If you sacrifice a scroll for an extra draw, you will pick up two scrolls from your deck. This can only be done once per turn.

Usage in-game
You may only sacrifice one scroll per turn, but card effects are likely to appear that allow you to gain more resources or sacrifice multiple scrolls.