How can you create a combo with Dune-Brood Nephilim, Aggravated Assault, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Dune-Brood Nephilim, Aggravated Assault, Phyrexian Altar

Color identity: BRGW
Mana cost: 
Steps:
  1. Deal combat damage with Dune-Brood Nephilim.
  2. Dune-Brood Nephilim triggers, creating a 1/1 Sand creature token for each land you control.
  3. Proceed to your postcombat main phase.
  4. Activate Phyrexian Altar by sacrificing five Sand tokens, adding {3}{R}{R}.
  5. Activate Aggravated Assault by paying {3}{R}{R}, untapping all creatures you control and getting an additional combat phase and main phase after this phase.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite combat damage
  - Infinite combat phases
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mana creatures you control can produce
  - Infinite sacrifice triggers
  - Infinite untap of creatures you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Dune-Brood Nephilim does not have summoning sickness.
  - An opponent is unable to block Dune-Brood Nephilim.
  - You control at least six lands.
[END OF COMBO PREREQUISITES]
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