Eschew Materials( Epic Level Handbook, p. 69)
You can cast spells without material components.
Any other metamagic feat,
A spell cast with Eschew Materials can be cast with no material components. Spells without material components are not affected. Spells with material components with a cost of more than 1 gp are not affected. An eschewed spell uses up a spell slot of the same level as the original spell.