Jan Jansen, Chaos Crafter, Clock of Omens, and Ashnod's Transmogrant

Prerequisites

• Jan Jansen, Chaos Crafter on the battlefield
• Clock of Omens on the battlefield
• Ashnod's Transmogrant on the battlefield
• You control an additional creature

Steps

1. Activate Ashnod's Transmogrant by tapping and sacrifcing it, putting a +1/+1 counter on Jan Jansen and causing it to become an artifact creature
2. Activate Jan Jansen's first ability by tapping it and sacrificing a creature, creating two Treasure tokens
3. Activate Clock of Omens by tapping the two Treasure tokens, untapping Jan Jansen
4. Activate Jan Jansen's second ability by tapping it and sacrificing a Treasure token, creating two 1/1 Construct creature tokens
5. Activate Clock of Omens by tapping the two Construct tokens, untapping Jan Jansen
6. Repeat from step 2

Results

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