Yedora, Grave Gardener, Primordial Mist, and Hangarback Walker

Prerequisites

• Yedora, Grave Gardener on the battlefield
• Primordial Mist on the battlefield
• Hangarback Walker in hand

Steps

1. Cast Hangarback Walker for = 0
2. Hangarback Walker dies to having zero toughness
3. Yedora and Hangarback Walker trigger
4. Resolve the Hangarback Walker trigger, creating zero Thopter tokens
5. Resolve the Yedora trigger, returning Hangarback Walker to the battlefield face-down as a Forest land
6. Tap that Forest for
7. Activate Primordial Mist by exiling the face-down Hangarback Walker, and allowing you to cast it this turn
8. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite green mana
• Infinite landfall triggers
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count