Infinite artifact ETBInfinite artifact LTBInfinite artifact sacrifice triggersInfinite storm countDestroy all permanents opponents control each turnInfinitely large creature until end of turnLockMass Land Denial
How it works
Cast Spine of Ish Sah by paying 0 due to Sami.
When Spine of Ish Sah enters, its first ability triggers, targeting either a permanent an opponent controls or itself if an opponent doesn't control a targetable permanent.
Holding priority, activate Atog by sacrificing Spine of Ish Sah.
If you targeted Spine of Ish Sah in step 2, the ability will fizzle due to having no legal target.
Spine of Ish Sah's second ability triggers, returning it from your graveyard to your hand.
Resolve the Atog ability from step 3.
Resolve the Spine of Ish Sah trigger from step 2, if applicable.