Zinnia, Valley's Voice, Cloudstone Curio, Ashnod's Altar, and Crimson Kobolds

Prerequisites

• Zinnia, Valley's Voice on the battlefield
• Cloudstone Curio on the battlefield
• Ashnod's Altar on the battlefield
• Crimson Kobolds in hand
• available

Steps

1. Cast Crimson Kobolds by paying , plus an additional for its offspring cost
2. When Crimson Kobolds 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 Crimson Kobolds trigger, creating a token copy of it that is 1/1
5. When the Crimson Kobolds token enters the battlefield, Cloudstone Curio triggers, returning the nontoken Crimson Kobolds from the battlefield to your hand
6. Activate Ashnod's Altar by sacrificing the token Crimson Kobolds, adding
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count