Equivalent Exchange: Difference between revisions

* The world ''Kartia'' revolves around magical cards, Kartia, that can be used to create basically anything, from living battle-creatures to spells to specific kinds of food and drink. There are a number of Original Kartia (such as "Life" "Death" and "Human"), the use of which is forbidden and will automatically cause the death of the caster. For most of the game, the player and the characters believe that the Kartia creates things from nothingness {{spoiler|but as it turns out, it just takes things from Eden, a parallel world inhabited by Elves and rich with natural magic. In fact, it is theoretically possible to "create" the whole Eden with Original Kartia, something that is half-accomplished twice during the story. It also turns out that Original Kartia doesn't kill the user, but rather transports them to Eden.}}

* In ''[[World of Warcraft]]'', warlock magic is said to work like this.

** Don't expect to ever have to pay that price [[Gameplay and Story Segregation|yourself]] though.

** Examples include the Life Tap spell (converts health into mana points), Health Funnel (heals your pet demon at a cost of your own health), Hellfire (which burns you as well as your enemies), and Ritual of Doom (summons a powerful demon; originally one party member would die upon completion, now one member is simply badly wounded). Other spells are fuelled with Soul Shards, gained by killing foes with a particular spell.