Infinite storm count
Cast Mox Diamond either from your hand or from the top of your library by paying
Showdown of the Skalds triggers, putting a +1/+1 counter on Arcbound Reclaimer.
Choose to sacrifice Mox Diamond instead of having it enter the battlefield.
Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Mox Diamond from your graveyard onto the top of your library.
Repeat.
Component Cards
How It Works
Cast Mox Diamond either from your hand or from the top of your library by paying
Showdown of the Skalds triggers, putting a +1/+1 counter on Arcbound Reclaimer.
Choose to sacrifice Mox Diamond instead of having it enter the battlefield.
Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Mox Diamond from your graveyard onto the top of your library.
Repeat.