Silent Spell

(Player's Handbook v.3.5, page 100, DnD 3.5)

[Metamagic]

You can cast spells silently.

Benefit

A silent spell can be cast with no verbal components. Spells without verbal components are not affected. A silent spell uses up a spell slot one level higher than the spell's actual level.

Special

Bard spells cannot be enhanced by this metamagic feat.