Solemnity + Luminous Broodmoth + Dimir House Guard

Solemnity

Luminous Broodmoth

Dimir House Guard

How it works

1. Activate Dimir House Guard by sacrificing it.
2. When Dimir House Guard dies, Luminous Broodmoth triggers, returning Dimir House Guard from your graveyard to the battlefield without a flying counter on it due to Solemnity.
3. Resolve the Dimir House Guard ability.
4. Repeat.

This elegant loop turns Dimir House Guard into an infinitely recurring sacrifice outlet by leveraging Luminous Broodmoth's ability to resurrect creatures that die without flying. Normally, the Broodmoth would brand the returning creature with a flying counter to ensure it can only trigger once per creature, but Solemnity steps in to prevent counters from ever being placed on your permanents. Because Dimir House Guard comes back completely clean of any flying counter, it is ready to be sacrificed to its own ability all over again, generating an endless cascade of entry, exit, and death triggers.