Life-Stealer

Warlock Level 8

Background
Your pact with infernal powers has given you the ability to steal and utilize the life energy of your enemies. This life energy provides you with a new avenue to power, and you hunger for it as a vampire craves blood   Paragon Path
This feature can be taken twice, with additional effects being granted on the second time it is taken.   First Level Features
Collect Life Spark: When an attack you make causes a creature to drop to 0 hit points or lower, you can regain hit points equal to one-half your warlock level.   Second Level Features
Life Spark Summons: As an action, you can summon a creature you have killed this combat anywhere within 50 ft of you. It has 10 hit points and acts on your next turn with a full set of actions as an independent creature that you control. The creature can do nothing except make basic attacks and move. It drops to 0 hit points again, dies, and fades away at the end of your next turn. Once summoned this creature cannot be used again for Collect Life Spark. This ability can only be used once between long rests.