Requires

Orthion, Hero of Lavabrink must be on the battlefield. Priest of Urabrask must be on the battlefield. Thornbite Staff must be on the battlefield. Altar of Dementia must be on the battlefield. Orthion does not have summoning sickness. Mana needed:

Steps

1. Activate Orthion's first ability by paying and tapping it, creating a token copy of Priest of Urabrask with haste.
2. When the token Priest of Urabrask enters the battlefield, it triggers, adding .
3. Activate Altar of Dementia by sacrificing the Priest of Urabrask token.
4. When the Priest of Urabrask token dies, Orthion triggers, untapping itself.
5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the Priest of Urabrask token's power.
6. Repeat.
7. Once you have infinite colored mana, you may instead use Orthion's second ability to make copies of any creature(s) you control.

Results