Activate Carrion Feeder by sacrificing Melira's Keepers.
When Melira's Keepers dies, Lumonious Broodmoth triggers, returning Melira's Keepers to the battlefield from your graveyand with no flying counter on it due to Melira's Keepers' ability.
Resolve the Carrion Feeder ability, putting a +1/+1 counter on it.