How can you create a combo with Hallar, the Firefletcher, Body of Research, Resourceful Defense?
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[START OF COMBO]This combo can be formed with Hallar, the Firefletcher, Body of Research, Resourceful Defense

Color identity: RGWU
Mana cost: {G}{G}{G}{U}{U}{U} plus enough mana to cast the kicker spell kicked
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. Cause the Fractal to leave the battlefield.
  3. Resouceful Defense triggers, putting a number of +1/+1 counters on Hallar equal to the number the Fractal had.
  4. Cast any kicker or multikicker spell with kicker by paying its mana cost plus its kicker cost.
  5. Hallar triggers, putting a +1/+1 counter on itself, then dealing damage equal to the number of +1/+1 counters on it to each opponent.[END OF COMBO STEPS]

Result:
  - Near-infinite +1/+1 counters on Hallar
  - Near-infinite damage[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Hallar, the Firefletcher must be on the battlefield
  - Body of Research must be in your hand
  - Resourceful Defense must be on the battlefield
  - You have a card in hand with kicker or multikicker.
  - You have a way to cause a creature to leave the battlefield.
[END OF COMBO PREREQUISITES]
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