The Sibsig Ceremony + Myr Retriever + The Immortal Sun + Workshop Assistant

The Sibsig Ceremony

Myr Retriever

The Immortal Sun

Workshop Assistant

How it works

1. Cast Workshop Assistant by paying 0.
2. When Workshop Assistant enters the battlefield, The Sibsig Ceremony triggers, destroying Workshop Assistant and creating a 2/2 Zombie Druid creature token.
3. When Workshop Assistant dies, it triggers, returning Myr Retriever from your graveyard to your hand.
4. Cast Myr Retriever by paying 0.
5. When Myr Retriever enters the battlefield, The Sibsig Ceremony triggers, destroying Myr Retriever and creating a 2/2 Zombie Druid creature token.
6. When Myr Retriever dies, it triggers, returning Workshop Assistant from your graveyard to your hand.
7. Repeat.

This clever loop harnesses the cost-reduction of The Sibsig Ceremony combined with The Immortal Sun to make casting artifacts completely free. When you drop Workshop Assistant for zero mana, The Sibsig Ceremony immediately destroys it, triggering its death ability to pull Myr Retriever back from your graveyard to your hand. You then cast Myr Retriever for zero mana as well, which is similarly destroyed by The Sibsig Ceremony so that its own death trigger can return Workshop Assistant to your hand. By endlessly looping these two interchangeable recursive engines—Workshop Assistant and Myr Retriever—you generate an endless cascade of leaves-the-battlefield, entry, death, and storm triggers alongside an army of 2/2 Zombie Druid tokens.