Heartsteel

Stats

Values as the League of Legends Wiki's item data lists them, for every mode; the data doesn't state their units.

Effects

• Colossal Consumption (unique): While within 700 units of an enemy champion, generate a stack on them each second, stacking up to 3 times. Your next basic attack against a target with 3 stacks is empowered to consume them all to deal 70 (+ 6% maximum health) bonus physical damage on-hit and grant you permanent bonus health equal to10% of that amount (30 second cooldown per target).
• Goliath (unique): Gain 0 to 30 for 11 increased size.³

Arena changes

• Health changed to 700.
• Base health regeneration changed to 0%.
• Colossal Consumption base damage changed to 125.
• Colossal Consumption damage health ratio changed to 12% bonus health.
• Colossal Consumption bonus health changed to 12% of damage dealt.
• ar also modifies health gained by Colossal Consumption⁴

• Check the lobby for melee or immobile champions before buying Heartsteel; it may not be the play against three teams made up entirely of ranged champions.⁵
• Heartsteel is recommended for Quest: Steel Your Heart, Black Hole, or a health-scaling champion such as Mundo.⁶
• Heartsteel, Black Hole, Overlord, and Titanic Hydra make a tank health and attack damage build that works with almost any tank build.⁷
• Singed or Amumu with Heartsteel, Toll, and Shiv is a recommended build.⁸
• With Ethereal Weapon, Karthus can buy Heartsteel first and try to stack it on every enemy; the build can then go tank or AP, with Rylai's recommended.⁹
• Hubris, Heartsteel, and Overlord's Bloodmail form an attack damage focused build.¹⁰
• Heartsteel works well on champions such as Master Yi and Bel'Veth, and with Vulnerability, Augmented Power, Double Tap, Ethereal Weapons, or Dual Wield.¹¹

Earlier formats

A tank build often paired Heartsteel with Sunfire.¹² 8x2 duos

Heartsteel could be obtained through Thief's Gloves as a random item, with increased item damage and stats.¹³ 8x2 duos

Heartsteel stacks could be lost during bye rounds.¹⁴ 8x2 duos

Apex Inventor was paired with Heartsteel, Black Hole Gauntlet, and Unending Despair.¹⁵ 8x2 duos

• Mundo was paired with Apex Inventor, Quest: Steel Your Heart, and Circle of Death, with Heartsteel among the build items.¹⁶ 8x2 duos
• Kalista's attacks with Runaan's Hurricane could trigger her Karma ally's Heartsteel without Karma auto-attacking.¹⁷ 8x2 duos
• Heartsteel was used as a last item after armor penetration, and early to cheese rounds against Goliath or Heartsteel enemies.¹⁸ 8x2 duos
• Heartsteel was included in an item set with Reaper's Toll, Jak'Sho, and an item that dealt true damage scaling with armor.¹⁹ 8x2 duos
• Heartsteel was paired with Black Hole Gauntlet and Overlord's Bloodmail in an attack damage build with Unending Despair.²⁰ 8x2 duos
• Heartsteel was paired with Apex Inventor and Gargoyle Stoneplate.²¹ 8x2 duos
• Apex Inventor was paired with Heartsteel as one of several tank item options.²² 8x2 duos

Heartsteel went on cooldown without an indicator in some cases.²³ 8x2 duos

Heartsteel was paired with Goliath or Mad Scientist in discussions of Blade of the Ruined King's lifesteal.²⁴ 8x2 duos

Heartsteel was paired with Goliath, Quest: Steel Your Heart, Celestial Body, Dragonheart, and Twin Mask in a tank build.²⁵ 8x2 duos