3e SRD:Quicken Spell
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Quicken Spell [Metamagic]
Benefit: Casting a quickened spell is a free action. The character can perform another action, even casting another spell, in the same round as the character casts a quickened spell. The character may only cast one quickened spell per round. A spell whose casting time is more than 1 full round cannot be quickened. A quickened spell uses up a spell slot four levels higher than the spells actual level.