clean botched sentence

spells.tex

@@ -220,7 +220,6 @@ A good witch leaves no part of her prey unused.
 
     The spell degrades when the target begins moving, and fails within \arabic{spellPlusOne} \glspl{interval}.
     Therefore, undead spellcasters, such as liches, must continuously cast this spell upon themselves.
-    It lasts
 
     \index{Necromancy!Preservation}
     If cast immediately, upon death, it can arrest the effects of \textit{rigor mortis} before they begin.