Yenna, Redtooth Regent, Agatha's Soul Cauldron, Ashnod's Altar, and Bounding Krasis

Prerequisites

• Yenna, Redtooth Regent on the battlefield
• Agatha's Soul Cauldron on the battlefield
• Ashnod's Altar on the battlefield
• Bounding Krasis on the battlefield
• plus enough mana to activate the Licid's ability
• available

Steps

1. Activate Bounding Krasis using the Licid's ability by paying its activation cost, attaching Bounding Krasis to Yenna and causing Bounding Krasis to become an Aura
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