Magic or superpowers that require the user to sacrifice experience points, power level or knowledge on their use.
- Duhhhh, I visited the unabridged version HERE but... somehow, from one visit... I feel dumb...
http://tvtropes.org/pmwiki/pmwiki.php/Laconic/CastFromExperiencePoints
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Magic or superpowers that require the user to sacrifice experience points, power level or knowledge on their use.