The Past Unforgotten

Hexproof
You may cast cards from your graveyard and from exile. you may spend white mana as though it were any color to cast permanent spells this way, blue as though it were any color to cast instant and sorcery spells this way, and black as though it were any color to cast spells this way.
"I don't recommend time travel, Beleren. not everyone can handle their history."
-Timelock