How can you create a combo with Agatha's Soul Cauldron, Spike Feeder, Karlov of the Ghost Council?
user
[START OF COMBO]This combo can be formed with Agatha's Soul Cauldron, Spike Feeder, Karlov of the Ghost Council

Color identity: WBG
Mana cost: 
Steps:
  1. Activate Karlov of the Ghost Council using Spike Feeder's second ability by removing a +1/+1 counter from it, causing you to gain 2 life.
  2. Karlov of the Ghost Council triggers, putting two +1/+1 counters on it.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on Karlov of the Ghost Council
  - Infinite lifegain
  - Infinite lifegain triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Agatha's Soul Cauldron must be on the battlefield
  - Spike Feeder must be exiled
  - Karlov of the Ghost Council must be on the battlefield
  - Karlov of the Ghost Council has at least one +1/+1 counter on it.
[END OF COMBO PREREQUISITES]
assistant