Omarthis, Ghostfire Initiate + Echoes of Eternity + Mirror Gallery

Omarthis, Ghostfire Initiate

Echoes of Eternity

Mirror Gallery

How it works

1. Cast Omarthis either from your hand or from the command zone by paying 2 plus commander tax, if applicable.
2. Echoes of Eternity triggers, copying the Omarthis spell.
3. Resolve the copy of the Omarthis spell, creating a token copy of Omarthis with one +1/+1 counter on it.
4. Resolve the original Omarthis spell, causing it to enter the battlefield with one +1/+1 counter on it.
5. The token Omarthis's first ability triggers twice.
6. Resolve the first trigger, putting a +1/+1 counter on the token Omarthis.
7. The nontoken Omarthis's first ability triggers twice.
8. Resolve the first trigger, putting a +1/+1 counter on the nontoken Omarthis.
9. Repeat from step 5.

This brilliant loop transforms a simple colorless cast into an engine of endless growth by utilizing Echoes of Eternity to copy your commander spell upon entry. With Mirror Gallery in play to bypass the legend rule, your original Omarthis, Ghostfire Initiate and its token copy enter the battlefield side-by-side, where their triggered abilities cross-target each other indefinitely. Every time a counter is placed, Echoes of Eternity steps in once more to double the triggers, quickly escalating your creatures into infinitely large threats ready to manifest your entire library upon death.