How can you create a combo with Cauldron Familiar, Witch's Oven, Clock of Omens, Ygra, Eater of All?
user
[START OF COMBO]This combo can be formed with Cauldron Familiar, Witch's Oven, Clock of Omens, Ygra, Eater of All

Color identity: BG
Mana cost: 
Steps:
  1. Activate Clock of Omens by tapping Cauldron Familiar, as it is a Food due to Ygra, and another Food, targeting Witch's Oven.
  2. Holding priority, activate Witch's Oven by tapping it and sacrificing Cauldron Familiar, creating a Food token.
  3. Resolve the Clock of Omens ability, untapping Witch's Oven.
  4. Activate Cauldron Familiar by sacrificing a tapped Food, returning Cauldron Familiar from your graveyard to the battlefield.
  5. When Caludron Familiar enters the battlefield, it triggers, causing each opponent to lose 1 life and you to gain 1 life.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite lifegain triggers
  - Infinite lifegain
  - Infinite lifeloss
  - Infinite tapped Food tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least one additional Food.
[END OF COMBO PREREQUISITES]
assistant