Najeela, the Blade-Blossom, Dune-Brood Nephilim, and Phyrexian Altar

Prerequisites

• Najeela, the Blade-Blossom on the battlefield
• Dune-Brood Nephilim on the battlefield
• Phyrexian Altar on the battlefield
• Dune-Brood Nephilim does not have summoning sickness
• An opponent is unable to block Dune-Brood Nephilim
• You control at least six lands

Steps

1. Deal combat damage with Dune-Brood Nephilim
2. Dune-Brood Nephilim triggers, creating a 1/1 Sand creature token for each land you control
3. Activate Phyrexian Altar by sacrificing five Sand tokens, adding
4. Activate Najeela by paying , untapping all attacking creatures, giving them trample, lifelink and haste, and getting 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