Goblin Welder, Ashaya, Soul of the Wild, and Retreat to Coralhelm

Prerequisites

• Goblin Welder on the battlefield
• Ashaya, Soul of the Wild on the battlefield
• Retreat to Coralhelm on the battlefield
• Goblin Welder does not have summoning sickness
• You control at least one nontoken artifact creature
• You have at least one artifact creature card in your graveyard

Steps

1. Activate Goblin Welder by tapping it, sacrificing any artifact creature you control and returning any other artifact creature from your graveyard to the battlefield
2. The creature enters the battlefield as a Forest land, triggering Retreat to Coralhelm, untapping Goblin Welder
3. Repeat

Results

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