Refine Blade•Skill

Is Refine Blade good in Slay the Spire 2?

Refine Blade is a common Regent skill in Slay the Spire 2. In combat it resolves as: Forge. Next turn, gain Energy. It’s a dependable, middle-of-the-pack option, landing at C tier in our rankings.

Across 376 recorded runs, decks running it win 26.2% of the time, comfortably clear of the 13.9% average, by 12.3%. It’s a more selective pick, turning up in just 3.3% of decks that could run it. Offer data backs the pick — taken 20.1% of the time it is shown, with 26.9% for runs that took it against 23.9% for runs that did not, a +2.9% pick lift across 323 decided runs. Regent players keep it in 18.6% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.3 times in the decks that take it.

It performs best next to Tyranny — together they post a +24.1% swing in win rate. It also has strong chemistry with the relic Vajra, which moves its win rate by +25.6%. At 1 energy, it’s upgraded in 31.9% of runs and usually joins the deck around floor 11.

Upgraded, it gains +4 Forge, which is why so many decks invest a rest-site upgrade in it. That’s 98 wins, 276 deaths, and 2 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Knowledge Demon Boss, which closes out 6.4% of its appearances. Read on for Refine Blade’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Regent run.

Pick or Skip: Refine Blade

Out of 1990 recorded offers Refine Blade is taken 20.1% of the time, and taking it is worth +2.9% in pick lift — 26.9% for runs that picked it against 23.9% for runs that skipped, across 323 decided runs.

Taken 400 times out of 1990 offers.

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.

When to Pick Up Refine Blade

Refine Blade is strongest when it joins the deck in Act 3, where runs win 50.0% across 22 runs — one of 4 recorded pickup windows.

Win rate of runs by the act Refine Blade entered the deck. Acts that have not reached the sample floor show their run count only.

Best Cards to Pair with Refine Blade

Ranked by win-rate lift, Refine Blade performs best alongside Tyranny (+24.1%), Mad Science (+22.7%), and Decisions, Decisions (+20.1%).

Tyranny+24.1%27 runsMad Science+22.7%26 runsDecisions, Decisions+20.1%41 runsSword Sage+15.3%71 runsVoid Form+14.3%78 runsCosmic Indifference+14.2%103 runs

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

Refine Blade Win Rate by Class

Refine Blade is drafted only by the Regent, where it holds a 26.1% win rate across 372 runs.

The Regentappears in 18.6% of its runs (372 tracked)

Best Relics for Refine Blade

Refine Blade pairs best with the relics Vajra (+25.6%), Unceasing Top (+24.3%), and Miniature Cannon (+22.7%), ranked by win-rate lift.

Vajra+25.6%51 runsUnceasing Top+24.3%15 runsMiniature Cannon+22.7%26 runsBag of Marbles+22.1%41 runsThrowing Axe+20.3%15 runsAnchor+19.4%66 runs

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

Refine Blade Card Details

Refine Blade is a common skill costing 1 energy; it’s upgraded in 31.9% of runs and usually picked up by floor 11.

Forge. Next turn, gain Energy.

Upgrade: +4 Forge

What Ends Runs with Refine Blade

Refine Blade’s most common run-enders are Knowledge Demon Boss (6.4%), Kaiser Crab Boss (5.3%), and Decimillipede Elite (4.5%).

• Knowledge Demon Boss6.4% of runs
• Kaiser Crab Boss5.3% of runs
• Decimillipede Elite4.5% of runs
• Test Subject Boss4.0% of runs
• Queen Boss4.0% of runs

See Also

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