The Oblivion Foundry

At the beginning of your upkeep, The Oblivion Foundry deals 2 damage to you.
{t}: Add {b}{b}.
Whenever you sacrifice another permanent, add {b} equal to that permanents converted mana cost.
{b}{b}{b}{b}{b}, {t}, sacrifice The Oblivion Foundry: Create a 15/15 black Horror creature token with indestructible, trample and "This creature gets
-X/-X where X is equal to your life total."