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 192 recorded runs, decks running it win 29.7% of the time, comfortably clear of the 14.1% average, by 15.6%. It’s a more selective pick, turning up in just 1.8% of decks that could run it. Offer data backs the pick — taken 23.8% of the time it is shown, with 30.8% for runs that took it against 28.7% for runs that did not, a +2.0% pick lift across 159 decided runs. Regent players keep it in 10.4% 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 Make It So — together they post a +29.4% swing in win rate. It also has strong chemistry with the relic Gorget, which moves its win rate by +27.8%. At 0 energy, it’s upgraded in 25.4% of runs and usually joins the deck around floor 15.

Upgraded, it gains +1 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 57 wins, 135 deaths, and 0 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Decimillipede Elite, which closes out 5.2% 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.

Pick or Skip: Radiate

Out of 734 recorded offers Radiate is taken 23.8% of the time, and taking it is worth +2.0% in pick lift — 30.8% for runs that picked it against 28.7% for runs that skipped, across 159 decided runs.

Taken 175 times out of 734 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 Radiate

Radiate is strongest when it joins the deck in Act 3, where runs win 71.4% across 28 runs — one of 3 recorded pickup windows.

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

Best Cards to Pair with Radiate

Ranked by win-rate lift, Radiate performs best alongside Make It So (+29.4%), Collision Course (+18.7%), and Monologue (+18.5%).

Make It So+29.4%17 runsCollision Course+18.7%23 runsMonologue+18.5%19 runsThe Smith+18.3%17 runsKnow Thy Place+18.1%59 runsManifest Authority+17.4%26 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 29.7% win rate across 192 runs.

The Regentappears in 10.4% of its runs (192 tracked)

Best Relics for Radiate

Radiate pairs best with the relics Gorget (+27.8%), Pantograph (+26.9%), and Pendulum (+26.3%), ranked by win-rate lift.

Gorget+27.8%23 runsPantograph+26.9%20 runsPendulum+26.3%31 runsAnchor+25.6%37 runsWar Paint+24.3%27 runsCentennial Puzzle+23.7%33 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 25.4% of runs and usually picked up by floor 15.

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 (5.2%), Kaiser Crab Boss (4.2%), and Test Subject Boss (4.2%).

• Decimillipede Elite5.2% of runs
• Kaiser Crab Boss4.2% of runs
• Test Subject Boss4.2% of runs
• The Insatiable Boss3.6% of runs
• Infested Prisms Elite3.6% of runs

See Also

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