The Master, Formed Anew, Cavalier of Night, and Ashnod's Altar

Prerequisites

• The Master, Formed Anew on the battlefield
• Cavalier of Night in exile
• Ashnod's Altar on the battlefield
• Cavalier of Night in exile with a takeover counter on it
• The Master on the battlefield as a copy of Cavalier of Night
• available

Steps

1. Activate Ashnod's Altar by sacrificing The Master, adding
2. When The Master dies, its second ability triggers, returning itself from your graveyard to the battlefield as a copy of Cavalier of Night
3. When The Master enters the battlefield, its first ability triggers, doing nothing
4. Repeat

Results

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