update spellArea command to spellTargets counter

magic.sty

spells/Air2.tex

spells/Air3.tex

spells/AirFire4.tex

spells/Death2.tex

spells/Death4.tex

spells/Earth4.tex

spells/Fate1.tex

spells/Fate2.tex

spells/Fate3.tex

spells/Fate4.tex

spells/Fire2.tex

spells/Fire3.tex

spells/Fire4.tex

spells/Force2.tex

spells/Life3.tex

spells/Life4.tex

spells/Light3.tex

spells/Mind2.tex

spells/Mind3.tex