How can you create a combo with Lae'zel, Vlaakith's Champion, Jace, Cunning Castaway, Oath of Gideon?
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[START OF COMBO]This combo can be formed with Lae'zel, Vlaakith's Champion, Jace, Cunning Castaway, Oath of Gideon

Color identity: WU
Mana cost: {1}{U}{U}
Steps:
  1. Cast Jace by paying {1}{U}{U}.
  2. Jace enters the battlefield with five loyalty counters due to Oath of Gideon and Lae'zel.
  3. Activate Jace's third loyalty ability by removing five loyalty counters from it.
  4. Jace dies as a state-based action due to having zero loyalty.
  5. Resolve the Jace ability, creating two non-legendary copies of Jace, which enter with five loyalty counters each due to Oath of Gideon and Lae'zel.
  6. Repeat from step 3 using a Jace token.
  7. Once you have infinite Jace tokens, you may activate their second loyalty abilities by removing two loyalty counters from them, creating infinite 2/2 Illusion creature tokens.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite Jace, Cunning Castaway tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Lae'zel, Vlaakith's Champion must be on the battlefield
  - Jace, Cunning Castaway must be in your hand
  - Oath of Gideon must be on the battlefield
[END OF COMBO PREREQUISITES]
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