Najeela, the Blade-Blossom, Jegantha, the Wellspring, and Mobile Garrison

Prerequisites

• Najeela, the Blade-Blossom on the battlefield
• Jegantha, the Wellspring on the battlefield
• Mobile Garrison on the battlefield
• Mobile Garrison is a creature
• Mobile Garrison and Jegantha do not have summoning sickness
• An opponent cannot block and kill Mobile Garrison

Steps

1. Declare Mobile Garrison and Najeela, if able, as attackers
2. Mobile Garrison triggers, as well as Najeela if it was declared an attacker
3. Resolve the Mobile Garrison trigger, untapping Jegantha
4. Resolve the Najeela trigger, if applicable, creating a 1/1 Warrior creature token that is tapped and attacking
5. Holding priority, activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs
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 with haste
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers