Ulia Nightwing

0: Put a number of loyalty counters on Ulia Nightwing equal to the number of Curses you control, then you gain that much life.
-2: Create a black Aura Curse enchantment token with "Enchant creature" and "Enchanted creature gets -4/-2." attached to target creature.
-7: Target opponent gets an emblem with "At the beginning of your upkeep, sacrifice a third of your permanents, then you lose that much life."