Primordial Mist, and Rakdos, Lord of Riots

Prerequisites

• Primordial Mist on the battlefield
• Rakdos, Lord of Riots on the battlefield
• You have a creature card in hand that has Morph or Megamorph
• Opponents have lost at least three life this turn

Steps

1. Cast the creature using its morph or megamorph cost by paying , putting it face-down on the battlefield as a 3/3 creature
2. Activate Primordial Mist by exiling the face down creature face up, allowing you to cast it this turn
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite storm count