Stalwart Successor + Furystoke Giant + Yahenni, Undying Partisan

Stalwart Successor

Furystoke Giant

Yahenni, Undying Partisan

How it works

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