Drain PowerAttack
Deal 10 damage. Upgrade random cards in your Discard Pile.
Is Drain Power good in Slay the Spire 2?
Drain Power is a common Necrobinder attack in Slay the Spire 2. In combat it resolves as: Deal 10 damage. Upgrade random cards in your Discard Pile. It currently underperforms most alternatives, sitting at F tier in our Slay the Spire 2 card rankings.
Across 121 recorded runs, decks running it win 18.4% of the time, right in line with the typical deck. It’s a more selective pick, turning up in just 3.2% of decks that could run it. Necrobinder players keep it in 14.4% 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 Debilitate — together they post a +20.8% swing in win rate. It also has strong chemistry with the relic Fragrant Mushroom, which moves its win rate by +30.6%. At 1 energy, it’s upgraded in 31.6% of runs and usually joins the deck around floor 11.
Upgraded, it gains +2 Damage, +1 Cards, which is why so many decks invest a rest-site upgrade in it. That’s 20 wins, 89 deaths, and 12 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Knowledge Demon Boss, which closes out 8.3% of its appearances. Read on for Drain Power’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Necrobinder run.
Drain Power Win Rate & Pick Rate
At 18.4%, Drain Power performs almost exactly at the 19.0% all-deck average (0.6% off), as charted below.
Run Outcomes with Drain Power
Drain Power has 20 wins and 101 losses over 121 tracked runs (16.5% won); abandoned runs count as losses.
- Wins 16.5%
- Losses 83.5%
Best Cards to Pair with Drain Power
Ranked by win-rate lift, Drain Power performs best alongside Debilitate (+20.8%), Dark Shackles (+18.8%), and Hang (+17.6%).
Debilitate13 runs
Dark Shackles4 runs
Hang10 runs
Borrowed Time17 runs
Eternal Armor4 runs
Ultimate Defend5 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Drain Power Win Rate by Class
Drain Power is played across 2 classes, led by Necrobinder (18.4%) and Ironclad (0.0%) by win rate.
Best Relics for Drain Power
Drain Power pairs best with the relics Fragrant Mushroom (+30.6%), Tiny Mailbox (+27.7%), and Strawberry (+21.8%), ranked by win-rate lift.
Fragrant Mushroom6 runs
Tiny Mailbox7 runs
Strawberry13 runs
Membership Card5 runs
War Paint16 runs
Festive Popper18 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Drain Power Card Details
Drain Power is a common attack costing 1 energy; it’s upgraded in 31.6% of runs and usually picked up by floor 11.
Deal 10 damage. Upgrade random cards in your Discard Pile.
Upgrade: +2 Damage, +1 Cards
What Ends Runs with Drain Power
Drain Power’s most common run-enders are Knowledge Demon Boss (8.3%), Kaiser Crab Boss (5.8%), and Bowlbugs Normal (5.8%).
- Knowledge Demon Boss8.3% of runs
- Kaiser Crab Boss5.8% of runs
- Bowlbugs Normal5.8% of runs
- The Insatiable Boss5.0% of runs
- Entomancer Elite4.1% of runs
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Drain Power – Frequently Asked Questions
Is Drain Power good in Slay the Spire 2?
Across 121 tracked runs, Drain Power has a 18.4% win rate — +0.6% below the average deck. Win rate reflects how often runs that include the card end in victory.
What does Drain Power do in Slay the Spire 2?
Drain Power costs 1 energy. Deal 10 damage. Upgrade random cards in your Discard Pile.
What class is Drain Power in Slay the Spire 2?
Drain Power is a Common Necrobinder Attack.
Is Drain Power worth upgrading in Slay the Spire 2?
Players upgrade Drain Power in 31.6% of runs. Upgrading it grants +2 Damage, +1 Cards.
What is the best relic for Drain Power?
In tracked runs, Drain Power has performed best alongside Fragrant Mushroom, which lifts its win rate by +30.6% over 6 runs together.
See Also
Compare Drain Power with the rest of the best Slay the Spire 2 cards, relics, and classes below.