Ba Sing Se, Ashnod's Altar, Lotus Cobra, and Tiller Engine

Prerequisites

• Ba Sing Se on the battlefield
• Ashnod's Altar on the battlefield
• Lotus Cobra on the battlefield
• Tiller Engine on the battlefield
• available

Steps

1. Activate Ba Sing Se's second ability by paying and tapping it, earthbending itself
2. Activate Ashnod's Altar by sacrificing Ba Sing Se, adding
3. When Ba Sing Se dies, it triggers, returning itself from your graveyard to the battlefield tapped
4. When Ba Sing Se enters, Lotus Cobra and Tiller Engine trigger
5. Resolve the Lotus Cobra trigger, adding
6. Resolve the Tiller Engine trigger, untapping Ba Sing Se
7. Repeat

Results

• Infinite LTB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite landfall triggers