Stalwart Successor, Shilgengar, Sire of Famine, and Glen Elendra Archmage

Prerequisites

• Stalwart Successor on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Glen Elendra Archmage on the battlefield

Steps

1. Activate Shilgengar by sacrificing Glen Elendra Archmage When Glen Elendra Archmage dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
2. When Glen Elendra Archmage enters, Stalwart Successor triggers, putting a +1/+1 counter on Glen Elendra Archmage Resolve the Shilgengar ability
3. Repeat

Results

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