Denry Klin, Editor in Chief, Lesser Masticore, and Ashnod's Altar

Prerequisites

• Denry Klin, Editor in Chief on the battlefield
• Lesser Masticore on the battlefield
• Ashnod's Altar on the battlefield
• Denry Klin has at least one +1/+1 counter on it
• Lesser Masticore does not have a -1/-1 counter on it

Steps

1. Activate Ashnod's Altar by sacrificing Lesser Masticore, adding
2. Lesser Masticore dies, triggering its persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Lesser Masticore enters the battlefield, triggering Denry Klin, putting a +1/+1 counter on Lesser Masticore
4. Repeat

Results

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