How can you create a combo with Ms. Bumbleflower, Evolution Witness, Urza's Bauble, Tormod's Crypt?
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[START OF COMBO]This combo can be formed with Ms. Bumbleflower, Evolution Witness, Urza's Bauble, Tormod's Crypt

Color identity: GWU
Mana cost: 
Steps:
  1. Cast the self-sacrificing artifact in your hand by paying {0}.
  2. Ms. Bumbleflower triggers, causing an opponent to draw a card, and then putting a +1/+1 counter on Evolution Witness.
  3. Evolution Witness triggers, returning the self-sacrificing artifact from your graveyard to your hand.
  4. Activate the self-sacrificing artifact cast in step 1 by sacrificing it, and paying other costs if necessary.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite storm count
  - Infinite card draw at the beginning of the next upkeep step
  - Infinite draw triggers for any number of opponents
  - Infinite card draw for any number of opponents
  - Infinite draw triggers at the beginning of the next upkeep step
  - Infinite +1/+1 counters on Evolution Witness[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Ms. Bumbleflower must be on the battlefield
  - Evolution Witness must be on the battlefield
  - Urza's Bauble must be in your hand or in the graveyard
  - Tormod's Crypt must be in your hand or in the graveyard
  - One of the self-sacrificing artifacts must be in your hand, with the other in your graveyard.
[END OF COMBO PREREQUISITES]
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