'Stink-Drinker' Goblin

When this creature enters the battlefield,
roll a 20-sided die.
1 - 6 | Add {b}{b}{b}{b}. You lose 8 life.
7 - 14 | Add {b}{b}{b}{b}{b}. You lose 10 life.
15 - 20 | Add {b}{b}{b}{b}{b}{b}. You lose 12 life.