Tribute to the World Tree, Lesser Masticore, and Ashnod's Altar

Prerequisites

• Tribute to the World Tree on the battlefield
• Lesser Masticore on the battlefield
• Ashnod's Altar on the battlefield
• Lesser Masticore does not have a -1/-1 counter on it

Steps

1. Activate Ashnod's Altar by sacrificing Lesser Masticore, adding one mana of any color
2. When Lesser Masticore dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When Lesser Masticore enters the battlefield, Tribute to the World Tree triggers, putting two +1/+1 counters on Lesser Masticore
4. Repeat

Results

• Infinite colorless mana
• Infinite damage to creatures
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers