Yenna, Redtooth Regent, Chatterfang, Squirrel General, Ashnod's Altar, and Thaumatog

Prerequisites

• Yenna, Redtooth Regent on the battlefield
• Chatterfang, Squirrel General on the battlefield
• Ashnod's Altar on the battlefield
• Thaumatog on the battlefield
• Yenna does not have summoning sickness
• You control at least one Aura
• available

Steps

1. Activate Yenna by paying and tapping it, creating a token copy of an Aura you control and a 1/1 Squirrel creature token, then untapping Yenna and causing you to scry 2
2. Activate Ashnod's Altar by sacrificing the Squirrel, adding
3. Activate Thaumatog's second ability by sacrificing the Aura token, giving Thaumatog +1/+1 until end of turn
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely large Thaumatog until end of turn
• Infinite sacrifice triggers
• Infinite scry 2