How can you create a combo with Embalmer's Tools, Phyrexian Altar, Tormod, the Desecrator, Gutterbones?
user
[START OF COMBO]This combo can be formed with Embalmer's Tools, Phyrexian Altar, Tormod, the Desecrator, Gutterbones

Color identity: B
Mana cost: 
Steps:
  1. Activate Phyrexian Altar by sacrificing Gutterbones, adding {B}.
  2. Activate Gutterbones by paying {B}, returning it to your hand.
  3. Tormod trigger, creating a 2/2 Zombie token.
  4. Activate Phyrexian Altar by sacrificing a Zombie token, adding {B}.
  5. Cast Gutterbones by paying {B}.
  6. Repeat[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - At least one opponent lost life this turn.
[END OF COMBO PREREQUISITES]
assistant