Danitha, Benalia's Hope + Ashnod's Altar + Shade's Form

Danitha, Benalia's Hope

Ashnod's Altar

Shade's Form

How it works

1. Activate Ashnod's Altar by sacrificing Danitha, adding CC.
2. When Danitha dies, Shade's Form triggers, returning Danitha from your graveyard to the battlefield tapped.
3. When Danitha enters the battlefield, it triggers, returning Shade's Form from your graveyard to the battlefield attached to Danitha.
4. Repeat.