Yenna, Redtooth Regent, Ashnod's Altar, Jump Scare, and Pestermite

Prerequisites

• Yenna, Redtooth Regent on the battlefield
• Ashnod's Altar on the battlefield
• Jump Scare in hand
• Pestermite on the battlefield
• available

Steps

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

Results

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