Heritage of the Ancient Age

When a card is put into your Graveyard, put a Legacy counter on Heritage of the Ancient Age.
{2}{r}, Remove Heritage of the Ancient Age from the game: Draw and/or return from your Graveyard to your hand as many cards as there were Legacy counters on Heritage of the Ancient Age. Then, you can shuffle into your Library up to the same amount of cards from your hand; then remove all remaining cards in your Graveyard from the game.