Shilgengar, Sire of Famine, and Zameck Guildmage

Prerequisites

• Shilgengar, Sire of Famine on the battlefield
• Zameck Guildmage on the battlefield
• available

Steps

1. Activate Zameck Guildmage's first ability by paying
2. Activate Shilgengar by sacrificing the persist creature
3. When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Zameck Guildmage
4. Resolve the Shilgengar ability
5. Repeat from step 2

Results

• Infinite artifact tokens
• Infinite Blood tokens
• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite creature sacrifice triggers