Stalwart Successor + Altar of Dementia + Furystoke Giant

Stalwart Successor

Altar of Dementia

Furystoke Giant

How it works

1. Activate Altar of Dementia 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 Altar of Dementia ability.
5. Repeat.