Clock of Omens, Mycosynth Lattice, and Stonybrook Schoolmaster

Prerequisites

• Clock of Omens on the battlefield
• Mycosynth Lattice on the battlefield
• Stonybrook Schoolmaster on the battlefield

Steps

1. Activate Clock of Omens by tapping Stonybrook Schoolmaster and another artifact, targeting Stonybrook Schoolmaster
2. Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token that is also an artifact due to Mycosynth Lattice
3. Resolve the Clock of Omens ability, untapping Stonybrook Schoolmaster
4. Repeat

Results

• Infinite ETB
• Infinite tapped creature tokens