Blight-Breath Catoblepas

Blight-Breath Catoblepas

Creature - Beast | Power/Toughness: 3 / 2 (CMC 6)
When Blight-Breath Catoblepas enters the battlefield, target creature an opponent controls gets -X/-X until end of turn, where X is your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)