Text (VI+errata): As an additional cost to cast ~this~, sacrifice all permanents you control and discard your hand. ; Target player loses 5 life. [Oracle 2009/07/08]
The sacrifice of all your permanents and discarding of your hand is part of the play cost and is paid on announcement. You do not have a choice to pay this cost zero times or more than one time in order to multiply the effect. [D'Angelo 1997/01/28]
As always, you cannot sacrifice things you do not control. [Duelist Magazine #17, Page 30]
