Najeela, the Blade-Blossom, Ith, High Arcanist, and Jegantha, the Wellspring

Prerequisites

• Najeela, the Blade-Blossom on the battlefield
• Ith, High Arcanist on the battlefield
• Jegantha, the Wellspring on the battlefield
• All permanents do not have summoning sickness
• Opponents are unable to block and kill Najeela and Ith

Steps

1. Declare Najeela, Jegantha and Ith as attackers
2. Najeela triggers, creating a 1/1 Warrior creature token
3. Activate Ith by tapping it, untapping Jegantha and preventing all damage done to and done by Jegantha this turn
4. Activate Jegantha by tapping it, adding that can't be spent on generic mana costs
5. Activate Najeela by paying , untapping all attacking creatures, giving them trample, lifelink and haste, and getting an additional combat phase after this one
6. Repeat each combat phase

Results

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