Psychogenic Extractor

Whenever a spell or ability causes a player to
shuffle their library, Psychogenic Extractor
deals 2 damage to that player.
Then exile the top card of that library. Until
your next end step, may cast that card and
you may spend mana as though it were mana
of any color to cast that spell.
"In life my own mistakes have cause me far more
than any device of my foes ever inflicted." Urza