Danitha, Benalia's Hope, Gift of Immortality, and Ashnod's Altar

Prerequisites

• Danitha, Benalia's Hope on the battlefield
• Gift of Immortality on the battlefield
• Ashnod's Altar on the battlefield
• Gift of Immortality attached to Danitha

Steps

1. Activate Ashnod's Altar by sacrificing Danitha, adding
2. Danitha dies, triggering Gift of Immortality, returning Danitha from your graveyard to the battlefield
3. Danitha enters the battlefield, returning Gift of Immortality from your graveyard to the battlefield attached to Danitha
4. Repeat

Results

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