Vampirism, Stage 3 (Cruel Riposte)

Boon(s):
- Cruel Riposte. Whenever a creature within 5 feet of you makes an attack against you, you may use your reaction to make a melee weapon attack against the attacking creature. You may use this feature a number of times equal to your Dexterity modifier (minimum of 1). You regain all expended uses of this feature when you complete a long rest.
- You gain superior Darkvision (120 ft.) if you do not already have it.

Flaw.
Greater Sanguine Curse. Your curse has taken a stronger hold on you. As a result you gain the following features:
• You take 1d10 acid damage if you end your turn in running water.
• You take 1d10 radiant damage when you start your turn in sunlight.
• You must feed every 3 encounters.