Najeela, the Blade-Blossom, Faeburrow Elder, and Ahn-Crop Champion

Prerequisites

• Najeela, the Blade-Blossom on the battlefield
• Faeburrow Elder on the battlefield
• Ahn-Crop Champion on the battlefield
• None of the involved permanents have summoning sickness
• Opponents can not block and kill creatures you control
• You control a blue and a black permanent

Steps

1. Declare Najeela, Ahn-Crop Champion and Faeburrow Elder as attackers, choosing to exert Ahn-Crop Champion as it attacks
2. Ahn-Crop Champion and Najeela trigger
3. Resolve the Ahn-Crop Champion trigger, untapping all other creatures you control
4. Resolve the Najeela trigger, creating a 1/1 Warrior creature token that's tapped and attacking
5. Activate Faeburrow Elder by tapping it, adding
6. Activate Najeela by paying , untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one
7. Repeat each combat phase

Results

• Infinite combat phases
• Infinite creature tokens
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers