Infinite +1/+1 counters on a creature, Infinite +1/+1 counters on Golems you control
Cast Dark Sphere either from your hand by paying or from the top of your library by paying 0 life.
Showdown of the Skalds triggers, putting a +1/+1 counter on Arcbound Reclaimer.
Activate Dark Sphere by tapping and sacrificing it.
Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Dark Sphere from your graveyard onto the top of your library.
Repeat.
Component Cards
How It Works
Cast Dark Sphere either from your hand by paying or from the top of your library by paying 0 life.
Showdown of the Skalds triggers, putting a +1/+1 counter on Arcbound Reclaimer.
Activate Dark Sphere by tapping and sacrificing it.
Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Dark Sphere from your graveyard onto the top of your library.
Repeat.