Life per Hit (a.k.a. Life on Hit, LpH or LoH) is an item attribute and secondary character statistic in Diablo III which heals Life for The Nephalem hero upon inflicting damage to monsters, much like Life Steal in the previous game but not scaling with damage done. A character's Life per Hit can be a significant contributor to overall Recovery, despite only working while attacking.
In-game[]
Unlike Life Steal, Life per Hit heals a fixed amount of Life for every damaging attack that hits an enemy target, regardless of the Proc Coefficient and the amount of enemies hit. Unlike most "on hit" effects, Life per Hit requires hitting an enemy, not an object, and dealing any damage with that attack. This normally does not trigger off attacks from pets and minions, attacks that deal no damage (e.g. using a non-damaging skill or hitting only an enemy affected by the Shielding immunity) and skills that do not interrupt normal casting, attacking and channeling (i.e. do not animate, like Frost Nova or Overpower). Channeled attacks heal the character every attack period (that is, with 2 attacks per second, it will heal the player every 0.5 seconds). Damage over time attacks (like Haunt or Blizzard) only heal the caster once, whenever the first enemy is initially affected, and do not heal the caster with continuous damage.
Life per Hit can roll on rings, gloves, weapons, helms, amulets, and bracers. At level 70, maximum Life per Hit on a single item can be as high as 18,429 on legendary follower items, amulets or one-handed weapons (23,950 for ancient legendaries). Legendary two-handed weapons can have up to 27,644 (35,940 for ancient legendaries). Legendary rings, gloves, helms and bracers can have up to 9214 (11,975 for ancient legendaries). This allows a maximum of 101,357 LpH from all items (131,725 with Ancient Legendary bonuses). Some skills, like Shadow Power, also increase this stat. Bottomless Potion of the Leech adds another 15000-20000 for 5 seconds.
Up to 50 Paragon points can be spent improving Life per Hit. It is located in the Utility tab, and it grows in power with character level, capping at 8046.3 total at level 70 for Reaper of Souls players. An Amethyst in a weapon socket also grants up to 28000 LpH. Leech passive skill also adds up to 18507 Life per Hit (scales with level) for Demon Hunters. The Necromancer skill Leech Curse scales according to Proc Coefficients and the number of enemies hit up to 4% maximum life gain, similar to the mechanics for Life on Hit before Patch 2.1.0.
The same item may never have both Life on Hit and Life per Kill as random magic properties, even if enchanted.
Development[]
Originally, Life per Hit healing was based on the Proc Coefficient and the amount of enemies hit. For Patch 2.1.0, developers reworked the mechanics, making the Life per Hit benefit more stable and reliable by granting the full life exactly once each attack. Existing LpH bonuses, including Paragon level bonus, were boosted greatly.