Day of the Dragons + Demon of Fate's Design + Enchanted Evening + Cloudstone Curio + Angelic Chorus

Day of the Dragons

Demon of Fate's Design

Enchanted Evening

Cloudstone Curio

Angelic Chorus

How it works

1. Cast Day of the Dragons by paying 7 life due to Demon of Fate's Design.
2. When Day of the Dragons enters the battlefield, its first ability and Cloudstone Curio trigger.
3. Resolve the Cloudstone Curio trigger, returning nothing to your hand from the battlefield.
4. Resolve the Day of the Dragons trigger, exiling all creatures you control and creating that many 5/5 Dragon creature tokens.
5. When the Dragon(s) enter the battlefield, Angelic Chorus and Cloudstone Curio trigger that many times.
6. Resolve all Angelic Chorus triggers, causing you to gain 5 life for each Dragon that entered the battlefield.
7. Resolve all but one Cloudstone Curio trigger, returning nothing to your hand from the battlefield.
8. Resolve the final Cloudstone Curio trigger, returning Day of the Dragons to your hand from the battlefield.
9. When Day of the Dragons leaves the battlefield, its second ability triggers, causing you to sacrifice all Dragons you control and return all cards exiled with Day of the Dragons to the battlefield.
10. When Demon of Fate's Design and any other creature(s) that were exiled by Day of the Dragons enter the battlefield, Angelic Chorus and Cloudstone Curio trigger that many times.
11. Resolve all Angelic Chorus triggers, causing you to gain life equal to the collective toughness of the creatures that entered the battlefield.
12. Resolve all Cloudstone Curio triggers, returning nothing to your hand from the battlefield.
13. Repeat.

By transforming every permanent on your board into an enchantment via Enchanted Evening, you completely rewrite the rules of your battlefield so that Cloudstone Curio can bounce your own enchantments whenever another permanent enters. This allows you to cast Day of the Dragons for free by paying life through Demon of Fate's Design, triggering a massive wave of token generation that immediately lets the Curio scoop the Day of the Dragons right back to your hand. As your original creatures and dragons loop in and out of exile, Angelic Chorus turns every single entry into a massive burst of life to easily sustain your Demon-fueled casting costs.