How can you create a combo with Najeela, the Blade-Blossom, Shriekwood Devourer?
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[START OF COMBO]This combo can be formed with Najeela, the Blade-Blossom, Shriekwood Devourer

Color identity: WUBRG
Mana cost: 
Steps:
  1. Declare any creature with power 5 or greater that cannot be blocked and killed by an opponent as an attacker.
  2. Shriekwood Devourer triggers, and Najeela triggers if a Warrior attacked.
  3. Resolve the Najeela trigger, if applicable, creating a 1/1 Warrior creature token that is tapped and attacking.
  4. Holding priority, activate up to five lands by tapping them, adding at least {W}{U}{B}{R}{G}.
  5. Resolve the Shriekwood Devourer trigger, untapping at least five lands.
  6. Activate Najeela by paying {W}{U}{B}{R}{G}, untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one.
  7. Repeat each combat phase.[END OF COMBO STEPS]

Result:
  - Infinite enters the battlefield
  - Infinite combat phases
  - Infinite mana lands you control can produce
  - Infinite creature tokens with haste
  - Infinite untap of lands you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control up to five lands that can tap to produce at least {W}{U}{B}{R}{G}.
  - You control a creature with power 5 or greater that does not have summoning sickness, and that cannot be blocked and killed by an opponent.
[END OF COMBO PREREQUISITES]
assistant