Minsc, Beloved Ranger, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Minsc, Beloved Ranger on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Minsc, adding
2. When Minsc dies, Nim Deathmantle triggers, causing you to pay to return Minsc from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. When Minsc enters the battlefield, it triggers, creating a 1/1 Boo legendary creature token
4. Activate Ashnod's Altar by sacrificing Boo, adding
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers