The Sibsig Ceremony | Birgi, God of Storytelling // Harnfel, Horn of Bounty | Myr Retriever

(and one other card)

Cast
Workshop Assistant by paying ({1} magic symbol) .
Birgi triggers, adding ({R} magic symbol) .
When
Workshop Assistant enters the battlefield,
The Sibsig Ceremony triggers, destroying
Workshop Assistant and creating a 2/2 Zombie Druid creature token.
When
Workshop Assistant dies, it triggers, returning
Myr Retriever from your graveyard to your hand.
Cast
Myr Retriever by paying ({0} magic symbol) .
Birgi triggers, adding ({R} magic symbol) .
When
Myr Retriever enters the battlefield,
The Sibsig Ceremony triggers, destroying
Myr Retriever and creating a 2/2 Zombie Druid creature token.
When
Myr Retriever dies, it triggers, returning
Workshop Assistant from your graveyard to your hand.
Repeat.