'Stink-Drinker' Goblin

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