Boonweaver Giant + Ashnod's Altar + Minion's Return

Boonweaver Giant

Ashnod's Altar

Minion's Return

How it works

1. Activate Ashnod's Altar by sacrificing Boonweaver Giant
2. When Boonweaver Giant dies, Minion's Return triggers, returning Boonweaver Giant from your graveyard to the battlefield tapped.
3. When Boonweaver Giant enters, it triggers, returning Minion's Return from your graveyard to the battlefield attached to Boonweaver Giant.
4. Repeat.