Shilgengar, Sire of Famine, and Combine Guildmage

Prerequisites

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

Steps

1. Activate Combine Guildmage's first ability by paying and tapping it
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 Combine 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