Nim Deathmantle, Krark-Clan Ironworks, and Magnetic Snuffler

Prerequisites

• Nim Deathmantle on the battlefield
• Krark-Clan Ironworks on the battlefield
• Magnetic Snuffler on the battlefield

Steps

1. Activate Krark-Clan Ironworks by sacrificing any Equipment except Nim Deathmantle, adding
2. Activate Krark-Clan Ironworks by sacrificing Magnetic Snuffler, adding
3. When Magnetic Snuffler dies, Nim Deathmantle triggers, returning Magnetic Snuffler from your graveyard to the battlefield, and attaching Nim Deathmantle to it
4. When Magnetic Snuffler enters the battlefield, its first ability triggers, returning any Equipment from your graveyard to the battlefield attached to Magnetic Snuffler
5. Repeat

Results

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