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Source: Monster Manual

Description: With this feat you can employ a spell-like ability with a moment's thought.

Prerequisites: Spell-like ability at caster level 10th or higher

The creature can use one of its spell-like abilities as a quickened spell-like ability three times per day (or less, if the ability is normally usable only once or twice per day). Using a quickened spell-like ability is a swift action that does not provoke attacks of opportunity. The creature can perform another action--including the use of another spelllike ability--in the same round that it uses a quickened spell-like ability. The creature can use only one quickened spell-like ability per round. The creature can only select a spell-like ability duplicating a spell with a level less than or equal to half its caster level (round down) -4. For a summary, see the table below. For example, a creature that uses its spell-like abilities as a 15th-level caster can only quicken spell-like abilities duplicating spells of 3rd level or lower. In addition, a spell-like ability that duplicates a spell with a casting time greater than 1 full round cannot be quickened.