Arcbound Reclaimer + Iron Spider, Stark Upgrade + Mox Opal + Krark-Clan Ironworks + Surge Conductor

Arcbound Reclaimer

Iron Spider, Stark Upgrade

Mox Opal

Krark-Clan Ironworks

Surge Conductor

How it works

1. Cast Mox Opal by paying its mana cost.
2. When Mox Opal enters, Surge Conductor triggers, putting one +1/+1 counter on Arcbound Reclaimer and at least two additional artfacts you control.
3. Activate Mox Opal by tapping it, adding mana.
4. Activate Krark-Clan Ironworks by sacrificing Mox Opal, adding CC.
5. Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Mox Opal from your graveyard on top of your library.
6. Activate Iron Spider's last ability by paying 2 and removing two +1/+1 counters from artifacts you control, drawing Mox Opal.
7. Repeat.

This clever loop turns the engine room of Krark-Clan Ironworks into a card-drawing machine by constantly recycling Mox Opal back to your hand. As Mox Opal enters the battlefield, Surge Conductor kicks in to proliferate counters across your permanents, while Iron Spider, Stark Upgrade helps fund your card draw and spread the essential +1/+1 counters. Arcbound Reclaimer acts as the crucial librarian, plucking Mox Opal straight from the graveyard and placing it back on top of your library so Iron Spider, Stark Upgrade can draw it for the next iteration.