The Patriarch is long dead, but his name still stains the lips of cultists.

Mystery Booster 2

Cabal Ritual

Add {B}{B}{B}.
Threshold — Add {B}{B}{B}{B}{B} instead if seven or more cards are in your graveyard.

From the Vault: Lore

Add {B}{B}{B} to your mana pool.
Threshold — Add {B}{B}{B}{B}{B} to your mana pool instead if seven or more cards are in your graveyard.

"Each syllable chills your veins. Each word rattles your mind."
—Cabal Patriarch

Vintage Masters

Torment

Add o
Bo
Bo
B to your mana pool.
Threshold Instead add o
Bo
Bo
Bo
Bo
B to your mana pool. (You have threshold if seven or more cards are in your graveyard.)