One with the Kami attached to any creature you control.
You control at least one Equipment.
You control at least one additional creature.
Steps
Activate an Equipment's equip ability by paying ({0} magic symbol) , attaching it to any creature you control except Puresteel Paladin or the creature that has One with the Kami attached.
Activate Altar of Dementia by sacrificing the creature with the Equipment attached.
When the creature dies, One with the Kami triggers, creating a number of 1/1 Spirit creature tokens equal to that creature's power.
Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.