Vaedren, Goddess of Unlife

Indestructible, Hexproof.
Vaedren, Goddess of Unlife cannot attack or block unless there are four or more creature cards in your graveyard.
{3}{b/g}{t}, Return target creature from a graveyard to the battlefield, target creature gets -X/-X where X is that creature's power, you lose life equal to that creature's toughness.