Danitha, Benalia's Hope + Altar of Dementia + Shade's Form

Danitha, Benalia's Hope

Altar of Dementia

Shade's Form

How it works

1. Activate Altar of Dementia by sacrificing Danitha.
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. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Danitha's power.
5. Repeat.