Pattern of Rebirth + The Cauldron of Eternity + Danitha, Benalia's Hope + Altar of Dementia

Pattern of Rebirth

The Cauldron of Eternity

Danitha, Benalia's Hope

Altar of Dementia

How it works

1. Activate Altar of Dementia by sacrificing Danitha.
2. When Danitha dies, The Cauldron of Eternity and Pattern of Rebirth trigger.
3. Resolve the Cauldron of Eternity trigger, putting Danitha on the bottom of your library from your graveyard.
4. Resolve the Pattern of Rebirth trigger, putting Danitha from your library onto the battlefield.
5. When Danitha enters the battlefield, it triggers, returning Pattern of Rebirth from your graveyard to the battlefield attached to Danitha.
6. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to Danitha's power.
7. Repeat.