Ground Seal

Oracle Text

When Ground Seal enters the battlefield, draw a card.

Cards in graveyards can't be the targets of spells or abilities.

Card Rulings

7/1/2012 The last ability only works when Ground Seal is on the battlefield.
7/1/2012 Only spells and abilities that target cards in graveyards will be affected. Abilities that don’t target cards in graveyards (like the one Tormod’s Crypt has) can still affect those cards.