Lord Voldamort

Whenever a player casts an Unforgivable Curse,
create a 1/1 green black snake with deathtouch.
{p/b}, {t}, Sacrifice a non-token creature: create a
horcrux token and draw a card. (Its an artifact
with "{1}, sacrifice this artifact: target creature
gets +1/+1 until end of turn")
At the beginning of your upkeep if you control
7 horcruxs, sacrifice them and then deal 20
damage to any target.