Quicken spell

Type of Feat: Metamagic

Prerequisite: Cast 4th-level spells

Required for: Automatic Quicken Spell

Specifics: Quickened spells can be cast instantaneously, making them invulnerable to counterspells or interruption. A quickened spell is cast as a free action, and another action can be attempted within the same round, including the casting of another spell. Only one quickened spell can be cast per round.

Use: Quickened spells occupy spell slots four levels higher than normal.

Notes

Please note that Quicken Spell does not work in combination with Haste and is flawed in general. While the description says that a quickened spell is "invulnerable to counterspells and interruption", this is not the truth.