Cards: 10/100

Single/Multi: Single

Activate/Deploy/Effect: Deploy

Detriments: Non-stackable

Game Rules Text: Kept in front of player until their next Health reward from a Resource card. Doubles the amount of Health gained. Discard any additional Rich Blood cards drawn if one is already deployed

FAQ: This only triggers a doubling effect on three cards in the game: Health, 5x5x5, and Treasure. There are a number of other ways to gain Health in the game via expansions, but only those three apply to Rich Blood.