Sudden Enlarge

(Miniatures Handbook, page 28, DnD 3.5)

[Metamagic]

You may cast one spell per day with a greater range than normal without special preparation.

Benefit

Once per day, you may apply the Enlarge Spell feat to any spell you cast, without increasing the level of the spell or specially preparing it ahead of time. You may still use the Enlarge Spell feat normally, if you have it.