As you perform a ritual, you intersperse made-up words and improvise components, using odds and ends at hand.

Daily
Free Action      Personal

Trigger: You are performing a ritual of one-half your level or lower

Effect: You expend only half of the ritual's gold piece component cost (any focus item must still meet the minimum cost), although you cannot use this power to reduce the component cost of the rituals Brew Potion and Enchant Magic Item. You can also make a Bluff check in place of any skill check the ritual requires.

Published in Player's Handbook 3, page(s) 167.