How can you create a combo with Bogbrew Witch, Festering Newt, Mortuary, Ashnod's Altar, Intruder Alarm?
user
[START OF COMBO]This combo can be formed with Bogbrew Witch, Festering Newt, Mortuary, Ashnod's Altar, Intruder Alarm

Color identity: UB
Mana cost: {2}
Steps:
  1. Activate Bogbrew Witch by paying {2} and tapping it, searching your library for Festering Newt and putting it onto the battlefield.
  2. When Festering Newt enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  3. Activate Ashnod's Altar by sacrificing Festering Newt, adding {C}{C}.
  4. When Festering Newt dies, it and Mortuary trigger.
  5. Resolve the Festering Newt trigger, giving any creature an opponent controls -4/-4 until end of turn.
  6. Resolve the Mortuary trigger, putting Festering Newt on top of your library from your graveyard.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mana creatures you control can produce
  - Infinite sacrifice triggers
  - Infinite untap of all creatures
  - Reduce any number of opposing creatures' toughness to zero[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Bogbrew Witch must be on the battlefield
  - Festering Newt must be in the library
  - Mortuary must be on the battlefield
  - Ashnod's Altar must be on the battlefield
  - Intruder Alarm must be on the battlefield
  - Bogbrew Witch does not have summoning sickness.
[END OF COMBO PREREQUISITES]
assistant