Boonweaver Giant + Next of Kin + Enduring Renewal + Mirror Image + Phyrexian Altar

Boonweaver Giant

Next of Kin

Enduring Renewal

Mirror Image

Phyrexian Altar

How it works

1. Activate Phyrexian Altar by sacrificing Mirror Image, adding one mana of any color.
2. When Mirror Image dies, Enduring Renewal and Next of Kin trigger.
3. Resolve the Enduring Renewal trigger, returning Mirror Image to your hand from your graveyard.
4. Resolve the Next of Kin trigger, putting Mirror Image from your hand onto the battlefield as a copy of Boonweaver Giant.
5. When Mirror Image enters the battlefield, it triggers, returning Next of Kin from your graveyard to the battlefield attached to Mirror Image.
6. Repeat.