Zinnia, Valley's Voice + Cloudstone Curio + Ashnod's Altar + Kobolds of Kher Keep

Zinnia, Valley's Voice

Cloudstone Curio

Ashnod's Altar

Kobolds of Kher Keep

How it works

1. Cast Kobolds of Kher Keep by paying 0, plus an additional 2 for its offspring cost.
2. When Kobolds of Kher Keep enters the battlefield, it and Cloudstone Curio trigger.
3. Resolve the Cloudstone Curio trigger, returning nothing from the battlefield to your hand.
4. Resolve the Kobolds of Kher Keep trigger, creating a token copy of it that is 1/1.
5. When the Kobolds of Kher Keep token enters the battlefield, Cloudstone Curio triggers, returning the nontoken Kobolds of Kher Keep from the battlefield to your hand.
6. Activate Ashnod's Altar by sacrificing the token Kobolds of Kher Keep, adding CC.
7. Repeat.