Hailstorm Power

Is Hailstorm good in Slay the Spire 2?

In Slay the Spire 2, Hailstorm is an uncommon power from the Defect card pool. Its effect: At the end of your turn, if you have Frost, deal 6 damage to ALL enemies. The data flags it as a weaker pick, settling at D tier — usually one to pass on unless your deck specifically wants it.

Over 400 tracked runs its win rate sits at 23.0%, 9.1% ahead of the 13.8% all-deck baseline. It sees niche play, included in only 1.9% of eligible runs. When it is actually offered players take it 17.1% of the time, and that looks correct: those runs win 24.2% against 17.5% for runs that passed, a +6.5% pick lift over 298 decided runs. Within Defect runs it’s drafted 8.7% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.3 copies on average.

Its standout pairing so far is Flak Cannon, which lifts its win rate by +25.0% when the two share a deck. On the relic side, Data Disk is its standout companion, worth a +33.7% win-rate swing alongside it. It costs 1 energy, gets upgraded 27.4% of the time, and tends to be picked up near floor 15.

Of the runs that drafted it, 91 ended in victory against 305 deaths and 4 abandons. Its most common run-ender is Infested Prisms Elite, finishing 5.3% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Hailstorm fits a Defect deck.

Pick or Skip: Hailstorm

Players take Hailstorm in 17.1% of the 1936 offers it appears in; those runs win 24.2% against 17.5% for runs that passed, a pick lift of +6.5% over 298 decided runs.

Taken 330 times out of 1936 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 Hailstorm

Of the 3 pickup windows recorded for Hailstorm, Act 3 is the best: 53.3% across 30 runs.

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

Best Cards to Pair with Hailstorm

Hailstorm’s strongest card pairings so far are Flak Cannon (+25.0%), Machine Learning (+22.7%), and Mad Science (+21.1%), each shown with the win-rate lift it adds.

Flak Cannon+25.0%24 runsMachine Learning+22.7%52 runsMad Science+21.1%36 runsSmokestack+16.5%50 runsSignal Boost+16.5%44 runsIteration+16.1%47 runs

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

Hailstorm Win Rate by Class

Exclusive to the Defect, Hailstorm posts a 23.2% win rate over 397 tracked runs.

The Defectappears in 8.7% of its runs (397 tracked)

Best Relics for Hailstorm

The relics that swing Hailstorm’s win rate the most are Data Disk (+33.7%), Cloak Clasp (+26.3%), and Captain's Wheel (+26.2%), with each lift shown.

Data Disk+33.7%55 runsCloak Clasp+26.3%21 runsCaptain's Wheel+26.2%15 runsParrying Shield+25.7%45 runsTiny Mailbox+24.7%20 runsLizard Tail+24.5%19 runs

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

Hailstorm Card Details

A 1-energy uncommon power, Hailstorm is upgraded 27.4% of the time and tends to enter the deck around floor 15.

At the end of your turn, if you have Frost, deal 6 damage to ALL enemies.

What Ends Runs with Hailstorm

Runs holding Hailstorm end most often against Infested Prisms Elite (5.3%), Test Subject Boss (4.8%), and Kaiser Crab Boss (4.8%) — the share of its runs each accounts for is shown.

• Infested Prisms Elite5.3% of runs
• Test Subject Boss4.8% of runs
• Kaiser Crab Boss4.8% of runs
• Aeonglass Boss4.8% of runs
• Knowledge Demon Boss4.5% of runs

See Also

Keep exploring Slay the Spire 2 tier lists and stats below.