Viscera Seer + Thran Vigil + Obstinate Gargoyle

Viscera Seer

Thran Vigil

Obstinate Gargoyle

How it works

1. Activate Viscera Seer by sacrificing Obstinate Gargoyle.
2. When Obstinate Gargoyle dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Thran Vigil triggers, putting a +1/+1 counter on Obstinate Gargoyle.
4. Resolve the Viscera Seer ability.
5. Repeat.