The sacrifice of all your permanents and discarding of your hand is part of the cost and is paid on casting. You do not have a choice to pay this cost zero times or more than one time in order to multiply the effect.
04-10-2004
wotc
As always, you can’t sacrifice things you do not control.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.