Surge Sorcerer (3.5e Alternate Class Feature)

Ensorcelled Surge: Whenever a surge sorcerer cast a spell she may choose to invoke an Ensorcelled Surge, she gain a +1 caster level bonus for the casting of that spell. At 3rd level, a sorcerer boosts her caster level by two instead of one. At 7th level, she boosts her caster level by three; at 11th level, by four; at 15th level, by five; and at 19th level, by six. Whenever she use Ensorcelled Surge she has 15% risk of incurring magical enervation, which leave her unable to cast spell for 1 round.

Additionally when using Ensorcelled Surge her spell's casting time is not lengthened by applying metamagic feat to them (allowing their spell to benefits from quicken spell).