When Dogmeat enters, mill five cards, then return an Aura or Equipment card from your graveyard to your hand.
Whenever a creature you control that's enchanted or equipped attacks, create a Junk token. (It's an artifact with ", Sacrifice this token: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")
Dogmeat fuels a Voltron/aura-equipment midrange deck: mill into your gear, suit up a creature, and swing to generate Junk tokens that grind out card advantage. You build a board of enchanted/equipped attackers, then convert the Junk into extra resources and explosive turns while one big threat carries combat damage.
Built-in recursion and self-mill smooths your aura/equipment package every cast
Junk tokens give relentless card advantage just for attacking
Naya colors offer top-tier ramp, removal, and combat tricks
Resilient threat density—commander recovers your best gear from the yard
Heavy reliance on a single enchanted/equipped creature invites spot removal
Auras blow you out for two cards if the creature dies
Self-mill can exile or bin key cards you can't recover
Junk requires attacking to ramp, so it stumbles against stax and pillow-fort