How can you create a combo with Shadowheart, Dark Justiciar, Body of Research?
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[START OF COMBO]This combo can be formed with Shadowheart, Dark Justiciar, Body of Research

Color identity: BGU
Mana cost: {1}{B}{G}{G}{G}{U}{U}{U}
Steps:
  1. Cast Body of Research by paying {G}{G}{G}{U}{U}{U}, creating a 0/0 Fractal creature token, then putting a number of +1/+1 counters on it equal to your deck size.
  2. Activate Shadowheart by paying {1}{B}, tapping it and sacrificing the Fractal, causing you to draw your library.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite draw triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Shadowheart, Dark Justiciar must be on the battlefield
  - Body of Research must be in your hand
  - Shadowheart does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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