Deadly Sin

Reaper 2 (When this creature destroys another creature gain two Soul Counter)
Stalker (You may attach this creature to target creature has if it was an aura, the creature in question gets +2/+2 and gains reaper 2, at the beginning of your upkeep, put a -1/-1 counter on that creature, when it dies, gain two Soul Counter)
They may look pretty and act human, but inside they feel nothing but hatred...