How can you create a combo with Bolas's Citadel, Mortuary, Darkheart Sliver?
user
[START OF COMBO]This combo can be formed with Bolas's Citadel, Mortuary, Darkheart Sliver

Color identity: BG
Mana cost: 
Steps:
  1. Activate Darkheart Sliver by sacrificing it.
  2. When Darkheart Sliver dies, Mortuary triggers, putting Darkheart Sliver on top of your library from your graveyard.
  3. Resolve the Darkheart Sliver ability, causing you to gain three life.
  4. Cast Darkheart Sliver from the top of your library by paying two life.
  5. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant