How can you create a combo with Treasury Thrull, Waves of Aggression, Dryad Arbor?
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[START OF COMBO]This combo can be formed with Treasury Thrull, Waves of Aggression, Dryad Arbor

Color identity: BRGW
Mana cost: {3}{R/W}{R/W}
Steps:
  1. Declare Treasury Thrull and the mana-producing creatures as attackers.
  2. Treasury Thrull triggers, returning Dryad Arbor to your hand from your graveyard.
  3. Move to your postcombat main phase.
  4. Cast Waves of Aggression from your graveyard for its retrace cost by paying {3}{R/W}{R/W} and discarding Dryad Arbor, untapping all creatures that attacked this turn, and causing you to get an additional combat and main phase after this one.
  5. Activate the mana-producing creatures by tapping them, adding at least {3}{R/W}{R/W}.
  6. Move to your next combat phase, and declare Treasury Thrull as an attacker.
  7. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite combat phases
  - Infinite magecraft triggers
  - Infinite self-discard triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Treasury Thrull must be on the battlefield
  - Waves of Aggression must be in the graveyard
  - Dryad Arbor must be in the graveyard
  - You control any number of creatures that can tap to produce at least {3}{R/W}{R/W}.
  - Treasury Thrull does not have summoning sickness.
  - Treasury Thrull and the mana-producing creatures cannot be blocked and killed by an opponent.
[END OF COMBO PREREQUISITES]
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