How can you create a combo with Lavinia, Azorius Renegade, Omen Machine?
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[START OF COMBO]This combo can be formed with Lavinia, Azorius Renegade, Omen Machine

Color identity: WU
Mana cost: 
Steps:
  1. At the beginning of each draw step, Omen Machine prevents the active player from drawing a card, and causes them to exile the top card of their library, and cast that card if its a spell without paying its mana cost, or put it onto the battlefield if it's a land.
  2. If an opponent casts a spell this way, Lavinia triggers, countering that spell.[END OF COMBO STEPS]

Result:
  - All spells opponents cast using Omen Machine are countered
  - Players cannot draw cards[END OF COMBO RESULT][END OF COMBO]

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