The Bloodshadow: Life steal

### Life Steal
Starting at 1st level, you can siphon life force from your enemies to heal yourself. When you hit a creature with a melee weapon attack, you can expend a **Life Steal charge** to deal additional necrotic damage equal to 1d6 + your Constitution modifier and heal yourself for the same amount. The damage increases as you gain levels in this class:
- At 6th level: 1d8 + your Constitution modifier
- At 14th level: 1d10 + your Constitution modifier

You regain all expended Life Steal charges when you finish a long rest. Starting at 3rd level, you can regain 1 Life Steal charge after reducing a creature to 0 hit points.