Sauron, Reign of Terror

Warleader (This creature has Warleader while
The One Ring is attached to it).
When Sauron, Reign of Terror enters the battlefield, search your deck for an artifact card
with converted mana cost less than its power, put that card onto your hand, then shuffle
your library.
When Sauron, Reign of Terror attacks, if it is Warleader, destroy all lands.