Yenna, Redtooth Regent, Ashnod's Altar, Jump Scare, and Bounding Krasis

Prerequisites

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

Steps

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

Results

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