Cadaverous Omen

Enchant creature
When Cadaverous Omen enters the battlefield, gaze into the Abyss. (As you gaze into the Abyss, you get an emblem named The Abyss if you don't have one. Then your emblem activates the next ability.)
Enchanted creature gets -X/-X where X is the depth of the Abyss you've gazed.