History Main / CastFromHitPoints

* In ''Literature/PocketInTheSea'', there is a rare non-magical example when Clase (Mother) uses her body as a buffer against the electronic feedback from a submarine mecha's poor-quality piloting interface. It almost kills her and is written in such a way to suggest doing so also shears years off of her life. In the same book, it's also hinted to the reader that using psionic abilities also works like this.
* In the ''[[Literature/ThePrincessSeries Princess]]'' series by Creator/JimCHines, this rule essentially applies to [[spoiler:Snow White; in this version of the tale, the 'dwarves' are actually seven elemental spirits -- Earth, Air, Fire, Water, Shadow, Light, and Magic -- and while they will serve Snow loyally when summoned, summoning them costs Snow seven years of her life. As a result, Snow is only in her early twenties, but after summoning the 'dwarves' twice she looks like she's in her mid-thirties]].

* Discussed in ''Literature/AGrimmQuest'' with a technique called 'pulling from the fade". Ash specifically says that the Fade is not his life force; while Amy describes that pulling from it still has the potential of killing the user or sending them into a coma.

* The [[WhatCouldHaveBeen planned but later cancelled]] playable djinni race in ''VideoGame/DungeonCrawl'' had this as their [[PlanetOfHats racial hat]]. Unlike other races which have HP and MP as separate stats, they'd have had one single stat called Essence which works as both.

* In ''Webcomic/ElGoonishShive'', Nanase claims she can [[http://www.egscomics.com/?date=2006-03-13 Cast From Calories]]. She gets a more traditional one later.

* In ''VideoGame/WorldOfHorror'', the Demon Mask does this passivly, as it increases all damage you deal by 1, at the cost of reducing your maximum stamina by 4.

* The UsefulNotes/GameBoyAdvance version of the ''WesternAnimation/MeetTheRobinsons'' tie-in game gives Wilbur and Lewis batteries that act as both health and a power supply for their gadgets. Using gadgets slowly drains the batteries one at a time, but they can recharge as long as they're not fully depleted. Allowing a battery to completely run dry causes it to be lost as if you were hit by an enemy, and it is possible to die by deliberately wasting them all.

* The UsefulNotes/NintendoSwitch port of ''VideoGame/{{Miitopia}}'' features the Horse Whispering skill, a protagonist-only ability which can be used with the horse which executes a really powerful attack based on the current job. Out of all skills learned, Horse Whispering requires ''maximum MP'' to work, and will completely deplete your magic meter in one try.

* ''Literature/TheBartimaeusTrilogy'':
** The most vital part to a {{Golem}}'s functioning is a magical scroll inserted into the construct's mouth. The writing of said scroll drains the vitality out of the writer to be transferred into the golem, and writing more than one manuscript (at least in a short time) is likely to kill you. (Though since [[AntiMagic golems completely neutralize all demon magic in their vicinity]] and all of magicians' power is based on demon magic, one is often enough.)
** In ''The Ring of Solomon'', [[spoiler:this turns out to be a serious drawback of the eponymous ring - it gives whoever wears it total control over a godlike entity and allows them to summon tens of thousands of obedient spirits in an instant... but merely touching it is enough to cause burning pain, wearing it even moreso, and actually ''using'' it will induce agony, fatigue and exhaustion, and will drain the wielders life force significantly over time, killing them if they overuse it -- King Solomon was a healthy young man when he found it, but the ring's power eventually reduces him to a prematurely aged, withered husk of his former self, a fact he hides from the world with powerful [[{{Glamour}} illusions]].]]

* In the original ''VideoGame/SaGaFrontier'', there's a couple spells that certain characters can get that cost Life Points to buy. Seeing as most characters only get seven or eight of these chances -- and once you're out, that character is completely dead until you get to an inn that resurrects (and not all do) -- you really have to weigh the pros and cons to get the spells.