Flitwing, Lyev Detective, Ulvenwald Mysteries, and Megatog

Prerequisites

• Flitwing, Lyev Detective on the battlefield
• Ulvenwald Mysteries on the battlefield
• Megatog on the battlefield

Steps

1. Activate Megatog by sacrificing a Clue
2. Ulvenwald Mysteries' second ability triggers, creating a Clue token due to Flitwing
3. Resolve the Megatog ability, giving Megatog +3/+3 until end of turn Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinitely large creature until end of turn