Millikin is a uncommon Artifact Creature — Construct card from Dominaria Remastered (DMR), collector number 231. Current market price: $0.21 (foil $0.36), TCGplayer market prices via Scryfall.
{T}, Mill a card: Add {C}. (Activate only as an instant. To mill a card, put the top card of your library into your graveyard.)