Cultivator of Blades, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Cultivator of Blades on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Cultivator of Blades, adding
2. Cultivator of Blades dies, triggering Nim Deathmantle, causing you to pay to return Cultivator of Blades from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. Cultivator of Blades enters the battlefield, creating two 1/1 Servo creature tokens
4. Activate Ashnod's Altar by sacrificing a Servo, adding
5. Repeat

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers