Fresnel Lens•Relic

Is Fresnel Lens good in Slay the Spire 2?

Fresnel Lens is an event relic in Slay the Spire 2. While carried, it does the following: Whenever you add a card that gains Block to your Deck, Enchant it with Nimble. It currently underperforms most relics, sitting at F tier in our Slay the Spire 2 relic rankings.

Across 406 recorded runs, decks carrying it win 16.0% of the time, comfortably clear of the 13.9% average, by 2.1%. It’s a more situational relic, showing up in just 3.5% of runs. The class that gets the most out of it is the Ironclad, at a 18.7% win rate. Ironclad players hold onto it in 3.5% of their runs.

It combos especially well with Battle Trance, worth a +40.2% win-rate swing together. Another strong card to run with it is Blur, worth +29.4% to its win rate. On average it’s acquired around floor 6 of a run. Its event rarity shapes how frequently you’ll run into it.

It has 64 run wins against 335 losses in our tracked data. When runs carrying it end, the most frequent culprit is Lagavulin Matriarch Boss, which closes out 8.9% of them. Read on for Fresnel Lens’s complete card, class, and threat breakdown before you decide to pick it up.

Pick or Skip: Fresnel Lens

Fresnel Lens is taken in 100.0% of its 406 recorded offers, but with 406 runs picking it and 0 passing, neither side has enough decided runs for a win rate yet.

Taken 406 times out of 406 offers.

A win rate is only shown once that side clears the sample floor. Below it you get the run counts and nothing else — a 0% here would be a reporting artefact, not a result.

Pick rate when offered counts offers, not runs: out of every time the game put this in front of a player, how often it was taken. It is not the same number as the share of runs that end up containing it.

Pick lift is the sample-adjusted gap between runs that took the option and runs that passed on it. It is the fair way to rank choices, because raw win rates put the smallest samples on top.

Best Cards with Fresnel Lens

Ranked by win-rate lift, the best cards to run with Fresnel Lens are Battle Trance (+40.2%), Blur (+29.4%), and Adrenaline (+28.4%).

Battle Trance+40.2%18 runsBlur+29.4%23 runsAdrenaline+28.4%18 runsCalculated Gamble+24.0%20 runsAcrobatics+24.0%20 runsColossus+22.9%21 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Fresnel Lens Win Rate by Class

Fresnel Lens shows up across 5 classes, led by Ironclad (18.7%), Regent (18.1%), and Silent (17.4%) by win rate.

The Ironclad18.7%94 runsThe Regent18.1%95 runsThe Silent17.4%93 runsThe Necrobinder12.1%68 runsThe Defect7.8%51 runs

Fresnel Lens Details

Fresnel Lens is an event relic carried in 3.5% of runs and usually picked up around floor 6.

Whenever you add a card that gains Block to your Deck, Enchant it with Nimble.

What Ends Runs with Fresnel Lens

Fresnel Lens’s most common run-enders are Lagavulin Matriarch Boss (8.9%), Soul Fysh Boss (6.4%), and Phantasmal Gardeners Elite (4.7%).

• Lagavulin Matriarch Boss8.9% of runs
• Soul Fysh Boss6.4% of runs
• Phantasmal Gardeners Elite4.7% of runs
• Waterfall Giant Boss4.7% of runs
• Terror Eel Elite4.7% of runs

See Also

Compare Fresnel Lens with the rest of the best Slay the Spire 2 relics, cards, and classes below.