Feldon of the Third Path + Priest of Urabrask + Thornbite Staff + Altar of Dementia

Feldon of the Third Path

Priest of Urabrask

Thornbite Staff

Altar of Dementia

How it works

1. Activate Feldon by paying 2 and tapping it, creating a token copy of Priest of Urabrask that is an artifact in addition to its other types.
2. When Priest of Urabrask enters the battlefield, it triggers, adding .
3. Activate Altar of Dementia by sacrificing Priest of Urabrask.
4. When Priest of Urabrask dies, Feldon triggers, untapping Feldon.
5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Priest of Urabrask' power.
6. Repeat.