Othelm, Sigardian Outcast, Ashaya, Soul of the Wild, Retreat to Coralhelm, and Ashnod's Altar

Prerequisites

• Othelm, Sigardian Outcast on the battlefield
• Ashaya, Soul of the Wild on the battlefield
• Retreat to Coralhelm on the battlefield
• Ashnod's Altar on the battlefield
• Othelm does not have summoning sickness
• You control another nontoken creature

Steps

1. Activate Ashnod's Altar by sacrificing another nontoken creature, adding
2. Activate Othelm by paying and tapping it, returning a nontoken creature from your graveyard to the battlefield
3. The creature enters the battlefield, triggering Retreat to Coralhelm, untapping Othelm
4. Repeat

Results

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