Arcum Dagsson [Coldsnap] Ixalan Treasure Chest and start thinking like a

and start thinking like a father

where X is the number of untapped lands they controlled at the beginning of this turn

target opponent exiles the top four cards of their library

as if it had always known

they're treated as though they don't exist

Arcum Dagsson [Coldsnap] Ixalan Treasure Chest and start thinking like aSet: Coldsnap Type: Legendary Creature Human Artificer Rare Cost: {3}{U} {T}: Target artifact creature's controller sacrifices it. That player may search their library for a noncreature artifact card, put it onto the battlefield, then shuffle their library. "Artifice sundered the world. It shall not again wreak such sorrow."