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Applying an ailment normally locks a build into a specific damage type, Cold gear for Freeze, Lightning gear for Shock, no matter which direction the rest of the build wants to go. This flask removes that lock: any critical strike applies the flask’s ailment during its effect, Shock from Topaz or Freeze and Chill from Sapphire, no matter if the hit that landed was Physical, Fire, Chaos, or something else. That freedom matters most for builds that were never going to invest in Cold or Lightning damage conversion just to unlock a single ailment, since this flask hands them that ailment anyway, keyed off crit chance the whole time.
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Affix |
Gameplay Effect |
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+40% to Lightning/Cold Resistance |
A strong resistance boost while the flask is active, covering the matching element |
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+5% to maximum Lightning/Cold Resistance |
Pushes the resistance cap higher for the duration, extra headroom against tough hits |
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(20-40)% chance to gain a Flask Charge when you deal a Critical Strike |
Keeps the flask topped up during crit-heavy fights, less manual refilling needed |
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50% reduced Duration |
The tradeoff for the strong effect, a shorter window each time you drink |
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All Damage from Critical Strikes can apply Lightning/Cold Ailments during effect |
The core mechanic: crits apply the matching ailment no matter what damage type lands |
Buy PoE Stormblood Boost if your damage type has been the one thing keeping a specific ailment out of reach. Tell our manager which version fits your build, Topaz or Sapphire, and this exact flask lands in your inventory the same session.
Nothing stops you from carrying both in your flask belt at once, since they occupy separate flask slots and don’t conflict with each other. Running both means access to Shock and Freeze together, though it also means two flask slots dedicated to ailment application, with less room for other utility effects.
Physical, Chaos, or hybrid damage builds see the biggest jump, since those characters normally have no path to Shock or Freeze at all without dedicated conversion or extra gear. A build already running Lightning or Cold damage benefits too, just less dramatically, since it could already reach those ailments through its own damage type.
The base 4 seconds gets cut in half by the flask’s own reduced Duration line, landing the real effect window closer to 2 seconds per use. That shorter window is the tradeoff for how strong the ailment-application effect is, and it’s part of why the charge-on-crit line matters so much for keeping the flask running through a long fight.