At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Omarthis with haste.
Put a +1/+1 counter on the Omarthis token or another colorless creature you control.
The nontoken Omarthis triggers, putting a +1/+1 counter on itself.
The Omarthis token triggers, putting a +1/+1 counter on itself.
Repeat from step 3.

Infinite +1/+1 counters on a creature token with haste

Infinite +1/+1 counters on Omarthis

Omarthis, Ghostfire Initiate

Helm of the Host

Instruments of War

Put a +1/+1 counter on a colorless creature you control.
Omarthis's first triggered ability triggers.
In response, activate Mirage Mirror by paying {2}, causing it to become a copy of Omarthis until end of turn.
Resolve the Omarthis trigger, putting a +1/+1 counter on itself.
Mirage Mirror triggers, putting a +1/+1 counter on itself.
Omarthis triggers, putting a +1/+1 counter on itself.
Repeat from step 5 any number of times.
End the loop by declining to place a +1/+1 counter on a creature.
Warning: Omarthis's last ability can increase the risk of losing by drawing from an empty library if you place enough counters on them.

Search Results