Flex is a Skill card for the Ironclad. It grants the user 2 Strength and applies 2 Shackle, which reduces the user's Strength by 2 when their turn ends. As a Common card, it can be found as a reward after combats.

Upon upgrade, Strength and Shackle both increase by 2.


  • Additionally, the Shackle effect only removes as much Strength as the card gives. It can be combined with Limit Break
    to permanently gain Strength, so long as Flex is played first.
    • For example, imagine you're at 0 Strength. You play Flex+, giving you 4 Strength and 4 Shackle. Then you play Limit Break
      , bringing you to 8 Strength and 4 Shackle. At the end of your turn, Shackle will reduce your Strength back to 4, which is still a permanent net gain of Strength.
  • Ancient Potion or Panacea
    , when coupled with Flex, will prevent the Strength from reducing until the end of the respective act's boss fight due to treating Shackle as a debuff.
Ironclad Cards
Attacks AngerBashBlood for BloodBludgeonBody SlamCarnageClashCleaveClotheslineDropkickFeedFiend FireHeadbuttHeavy BladeHemokinesisImmolateIron WavePerfected StrikePommel StrikePummelRampageReaperReckless ChargeSearing BlowSever SoulStrike (Ironclad)Sword BoomerangThunderclapTwin StrikeUppercutWhirlwindWild Strike
Skills ArmamentsBattle TranceBloodlettingBurning PactDefend (Ironclad)DisarmDouble TapDual WieldEntrenchExhumeFlame BarrierFlexGhostly ArmorHavocImperviousInfernal BladeIntimidateLimit BreakOfferingPower ThroughRageSecond WindSeeing RedSentinelShockwaveShrug It OffSpot WeaknessTrue GritWarcry
Powers BarricadeBerserkBrutalityCombustCorruptionDark EmbraceDemon FormEvolveFeel No PainFire BreathingInflameJuggernautMetallicizeRupture