Najeela, the Blade-Blossom, Ghalta and Mavren, and Phyrexian Altar

Prerequisites

• Najeela, the Blade-Blossom on the battlefield
• Ghalta and Mavren on the battlefield
• Phyrexian Altar on the battlefield
• You control at least six creatures that can attack this turn
• An opponent cannot block and kill creatures you control

Steps

1. Declare at least six creatures you control as attackers
2. Ghalta and Mavren triggers, creating at least six 1/1 Vampire creature tokens
3. Activate Phyrexian Altar five times by sacrificing five Vampires, 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 each combat phase

Results

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