Hidetsugu, Devouring Chaos is a rare Legendary Creature — Ogre Demon card from Magic Online Promos (PRM), collector number 97949.
{B}, Sacrifice a creature: Scry 2. {2}{R}, {T}: Exile the top card of your library. You may play that card this turn. When you exile a nonland card this way, Hidetsugu deals damage equal to the exiled card's mana value to any target.