Elas il-Kor, Sadistic Pilgrim

Deathtouch
Whenever another creature you control enters, you gain 1 life.
Whenever another creature you control dies, each opponent loses 1 life.

Zulaport Cutthroat

Whenever Zulaport Cutthroat or another creature you control dies, each opponent loses 1 life and you gain 1 life.

When Serrated Scorpion dies, it deals 2 damage to each opponent and you gain 2 life.

Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.