{1}{B}, {T}, Sacrifce a creature: Cornach becomes a Serpent with base power and toughness 3/3. Activate only as a sorcery

{2}{B}{B}, {T}, Sacrifce two creatures: If Cornach is a serpent, it becomes a Serpent Demon with base power and toughness 6/6, Deathtouch and Ward {2}. Activate only as a sorcery and only if Cornach is a serpent.

{3}{B}{B}{B}, {T}, Sacrifce Cornach: Draw four cards and create eight blood tokens. Activate this ability only if Cornach is a demon and only as a sorcery.