How can you create a combo with Samwise Gamgee, Witch's Oven, Shield Sphere, Clock of Omens?
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[START OF COMBO]This combo can be formed with Samwise Gamgee, Witch's Oven, Shield Sphere, Clock of Omens

Color identity: GW
Mana cost: 
Steps:
  1. Cast Shield Sphere by paying {0}.
  2. When Shield Sphere enters the battlefield, Samwise triggers, creating a Food artifact token.
  3. If desired, you may activate Clock of Omens by tapping the Food and Shield Sphere, untapping any artifact.
  4. Activate Witch's Oven by tapping it and sacrificing Shield Sphere, creating two Food artifact tokens.
  5. Activate Clock of Omens by tapping two Foods, untapping Witch's Oven.
  6. Activate Samwise by sacrificing three Foods, returning Shield Sphere from your graveyard to your hand.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mana artifacts you control can produce
  - Infinite sacrifice triggers
  - Infinite storm count
  - Infinite untap of artifacts you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Samwise Gamgee must be on the battlefield
  - Witch's Oven must be on the battlefield
  - Shield Sphere must be in your hand
  - Clock of Omens must be on the battlefield
[END OF COMBO PREREQUISITES]
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