Progenitus | Magic: The Gathering
Formats Progenitus is Legal in
Official Oracle Text for Progenitus
If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead.
Official Rulings for Progenitus
2/1/2009 : Progenitus can still be affected by effects that don't target it or deal damage to it (such as Day of Judgment).