How can you create a combo with Jedit Ojanen, Mercenary, Leyline of Singularity, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Jedit Ojanen, Mercenary, Leyline of Singularity, Phyrexian Altar

Color identity: GWU
Mana cost: 
Steps:
  1. Cause a creature to enter the battlefield under your control, which will be legendary due to Leyline of Singularity.
  2. Jedit triggers, causing you to pay {G} to create a 2/2 Cat Warrior creature token that is legendary due to Leyline of Singularity.
  3. The Cat Warrior enters the battlefield, triggering Jedit.
  4. Holding priority, activate Phyrexian Altar by sacrificing the Cat Warrior, adding {G}.
  5. Resolve the Jedit trigger, causing you to pay {G} to create a 2/2 Cat Warrior creature token that is legendary due to Leyline of Singularity.
  6. Repeat from step 3.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You have a way to cause a creature to enter the battlefield under your control.
[END OF COMBO PREREQUISITES]
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