Belthor, King of Men

You have, "At the beginning of your upkeep, or whenever an opponent becomes announced (this excludes your knight), you may create a tapped treasure token." and "{2}: Exile target creature.
Its controller may search their library for a basic
land card, put that card onto the battlefield
tapped, then shuffle. You may use this ability
once per game. You may use this ability an additional time for each announced knight."