How can you create a combo with Gravespawn Sovereign, Bile Urchin, Intruder Alarm?
user
[START OF COMBO]This combo can be formed with Gravespawn Sovereign, Bile Urchin, Intruder Alarm

Color identity: UB
Mana cost: 
Steps:
  1. Sacrifice Bile Urchin to have target opponent lose 1 life.
  2. Tap 5 untapped zombies you control to return Bile Urchin to the battlefield.
  3. Intruder Alarm triggers, untapping all creatures.
  4. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - At least four other Zombies on the battlefield.
[END OF COMBO PREREQUISITES]
assistant