Jan Jansen, Chaos Crafter, Clock of Omens, and Mycosynth Lattice

Prerequisites

• Jan Jansen, Chaos Crafter on the battlefield
• Clock of Omens on the battlefield
• Mycosynth Lattice on the battlefield
• You control an additional creature

Steps

1. Activate Jan Jansen's first ability by tapping it and sacrificing a creature, creating two Treasure tokens
2. Activate Clock of Omens by tapping the two Treasure tokens, untapping Jan Jansen
3. Activate Jan Jansen's second ability by tapping it and sacrificing a Treasure token, creating two 1/1 Construct creature tokens
4. Activate Clock of Omens by tapping the two Construct tokens, untapping Jan Jansen
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite tapped creature tokens
• Infinite tapped Treasure tokens