Stalwart Successor + Shilgengar, Sire of Famine + Lesser Masticore

Stalwart Successor

Shilgengar, Sire of Famine

Lesser Masticore

How it works

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