Najeela, the Blade-Blossom + Shriekwood Devourer

Prerequisites

• You control up to five lands that can tap to produce at least .
• 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.

Steps

1. 1Declare any creature with power 5 or greater that cannot be blocked and killed by an opponent as an attacker.
2. 2Shriekwood Devourer triggers, and Najeela triggers if a Warrior attacked.
3. 3Resolve the Najeela trigger, if applicable, creating a 1/1 Warrior creature token that is tapped and attacking.
4. 4Holding priority, activate up to five lands by tapping them, adding at least .
5. 5Resolve the Shriekwood Devourer trigger, untapping at least five lands.
6. 6Activate Najeela by paying , untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one.
7. 7Repeat each combat phase.

Effects

• Infinite combat phases
• Infinite creature ETB
• Infinite creature tokens with haste
• Infinite mana lands you control can produce
• Infinite untap of lands you control