Radiate•Attack

Is Radiate good in Slay the Spire 2?

Radiate is an uncommon Regent attack in Slay the Spire 2. In combat it resolves as: Deal 3 damage to ALL enemies for each Stars gained this turn. It’s a dependable, middle-of-the-pack option, landing at C tier in our rankings.

Across 85 recorded runs, decks running it win 28.8% of the time, comfortably clear of the 18.9% average, by 9.8%. It’s a more selective pick, turning up in just 2.2% of decks that could run it. Regent players keep it in 12.4% 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 Bundle of Joy — together they post a +23.8% swing in win rate. It also has strong chemistry with the relic Anchor, which moves its win rate by +28.5%. At 0 energy, it’s upgraded in 20.4% of runs and usually joins the deck around floor 16.

Upgraded, it gains +1 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 23 wins, 57 deaths, and 5 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Decimillipede Elite, which closes out 8.2% of its appearances. Read on for Radiate’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Regent run.

Best Cards to Pair with Radiate

Ranked by win-rate lift, Radiate performs best alongside Bundle of Joy (+23.8%), Make It So (+23.8%), and Heirloom Hammer (+23.5%).

Bundle of Joy+23.8%5 runsMake It So+23.8%5 runsHeirloom Hammer+23.5%7 runsSpoils of Battle+20.6%10 runsFurnace+20.6%10 runsVoid Form+18.3%11 runs

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

Radiate Win Rate by Class

Radiate is drafted only by the Regent, where it holds a 28.8% win rate across 85 runs.

The Regentappears in 12.4% of its runs (85 tracked)

Best Relics for Radiate

Radiate pairs best with the relics Anchor (+28.5%), Mercury Hourglass (+23.2%), and Horn Cleat (+20.6%), ranked by win-rate lift.

Anchor+28.5%16 runsMercury Hourglass+23.2%9 runsHorn Cleat+20.6%10 runsGorget+20.6%10 runsDaughter of the Wind+20.5%6 runsPermafrost+20.5%6 runs

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

Radiate Card Details

Radiate is an uncommon attack costing 0 energy; it’s upgraded in 20.4% of runs and usually picked up by floor 16.

Deal 3 damage to ALL enemies for each Stars gained this turn.

Upgrade: +1 Damage

What Ends Runs with Radiate

Radiate’s most common run-enders are Decimillipede Elite (8.2%), Phrog Parasite Elite (4.7%), and The Insatiable Boss (3.5%).

• Decimillipede Elite8.2% of runs
• Phrog Parasite Elite4.7% of runs
• The Insatiable Boss3.5% of runs
• The Kin Boss3.5% of runs
• Infested Prisms Elite3.5% of runs

See Also

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