Forgotten Ritual•Skill

Is Forgotten Ritual good in Slay the Spire 2?

Forgotten Ritual is an uncommon Ironclad skill in Slay the Spire 2. In combat it resolves as: If you Exhausted a card this turn, gain Energy. It currently underperforms most alternatives, sitting at D tier in our Slay the Spire 2 card rankings.

Across 73 recorded runs, decks running it win 23.1% of the time, comfortably clear of the 18.9% average, by 4.1%. It’s a more selective pick, turning up in just 1.9% of decks that could run it. Ironclad players keep it in 10.3% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.1 times in the decks that take it.

It performs best next to Stoke — together they post a +19.0% swing in win rate. It also has strong chemistry with the relic Mercury Hourglass, which moves its win rate by +23.1%. At 1 energy, it’s upgraded in 29.3% of runs and usually joins the deck around floor 18.

Upgraded, it gains +1 Energy, which is why so many decks invest a rest-site upgrade in it. That’s 15 wins, 50 deaths, and 8 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Queen Boss, which closes out 8.2% of its appearances. Read on for Forgotten Ritual’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Ironclad run.

Best Cards to Pair with Forgotten Ritual

Ranked by win-rate lift, Forgotten Ritual performs best alongside Stoke (+19.0%), Aggression (+14.0%), and Offering (+13.5%).

Stoke+19.0%5 runsAggression+14.0%7 runsOffering+13.5%10 runsPact's End+13.0%15 runsPommel Strike+12.1%28 runsCruelty+12.0%8 runs

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

Forgotten Ritual Win Rate by Class

Forgotten Ritual is drafted only by the Ironclad, where it holds a 23.1% win rate across 73 runs.

The Ironcladappears in 10.3% of its runs (73 tracked)

Best Relics for Forgotten Ritual

Forgotten Ritual pairs best with the relics Mercury Hourglass (+23.1%), Anchor (+20.6%), and Bag of Preparation (+19.9%), ranked by win-rate lift.

Mercury Hourglass+23.1%9 runsAnchor+20.6%10 runsBag of Preparation+19.9%7 runsFragrant Mushroom+19.0%5 runsLantern+18.5%10 runsRoyal Stamp+17.8%3 runs

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

Forgotten Ritual Card Details

Forgotten Ritual is an uncommon skill costing 1 energy; it’s upgraded in 29.3% of runs and usually picked up by floor 18.

If you Exhausted a card this turn, gain Energy.

Upgrade: +1 Energy

What Ends Runs with Forgotten Ritual

Forgotten Ritual’s most common run-enders are Queen Boss (8.2%), Knowledge Demon Boss (6.8%), and Decimillipede Elite (5.5%).

• Queen Boss8.2% of runs
• Knowledge Demon Boss6.8% of runs
• Decimillipede Elite5.5% of runs
• Test Subject Boss5.5% of runs
• Kaiser Crab Boss5.5% of runs

See Also

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