Activate Krark-Clan Ironworks by sacrificing any Equipment except Nim Deathmantle, adding ({C} magic symbol) ({C} magic symbol) .
Activate Krark-Clan Ironworks by sacrificing Magnetic Snuffler, adding ({C} magic symbol) ({C} magic symbol) .
When Magnetic Snuffler dies, Nim Deathmantle triggers, returning Magnetic Snuffler from your graveyard to the battlefield, and attaching Nim Deathmantle to it.
When Magnetic Snuffler enters the battlefield, its first ability triggers, returning any Equipment from your graveyard to the battlefield attached to Magnetic Snuffler.