Yenna, Redtooth Regent, Ashnod's Altar, Enchanted Evening, and Pestermite

Prerequisites

• Yenna, Redtooth Regent on the battlefield
• Ashnod's Altar on the battlefield
• Enchanted Evening on the battlefield
• Pestermite on the battlefield
• available

Steps

1. Activate Yenna by paying and tapping it, creating a token copy of Pestermite
2. When the Pestermite token enters, it triggers, untapping Yenna
3. Activate Ashnod's Altar by sacrificing the Pestermite token, adding
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers