Najeela, the Blade-Blossom, Lathril, Blade of the Elves, and Phyrexian Altar

Prerequisites

• Najeela, the Blade-Blossom on the battlefield
• Lathril, Blade of the Elves on the battlefield
• Phyrexian Altar on the battlefield
• Lathril and Najeela do not have summoning sickness
• An opponent is unable to block and kill Lathril
• Lathril has a power of at least six

Steps

1. Deal combat damage to a player with Lathril
2. Lathril triggers, creating at least six 1/1 Elf Warrior tokens
3. Activate Phyrexian Altar by sacrificing five Elf Warrior tokens, adding
4. Activate Najeela by paying , untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one
5. Repeat

Results

• Infinite colored mana
• Infinite combat damage
• Infinite combat phases
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers