Melira, Sylvok Outcast + Blasting Station + Twilight Shepherd

Melira, Sylvok Outcast

Blasting Station

Twilight Shepherd

How it works

1. Activate Blasting Station by tapping it and sacrificing Twilight Shepherd.
2. When Twilight Shepherd dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Melira.
3. When Twilight Shepherd enters, Blasting Station triggers, untapping Blasting Station
4. Resolve the Blasting Station ability from step 1
5. Repeat.