Lucky Fysh

Lucky Fysh is a Common relic in Slay the Spire 2 that adds an additional copy of every card you add to your deck. This doubling effect means every card reward, shop purchase, or event card gain results in two copies instead of one, rapidly expanding your deck size.

The value of Lucky Fysh depends entirely on your deck-building strategy. In builds that want multiple copies of key cards, such as decks built around a specific combo piece or scaling card, getting two copies at once accelerates your strategy dramatically. However, the mandatory doubling also applies to cards you only want one copy of, which can lead to deck bloat and reduced consistency.

Lucky Fysh is best in strategies that benefit from thick decks or that want redundancy in key card types. It pairs well with Membership Card, which heals based on cards added. The relic has a significant anti-synergy with thin deck strategies and infinite combos, where extra copies dilute your draws. Careful card selection is essential with Lucky Fysh, as every card you take is now a bigger commitment to your deck's composition.