Kos,Machine God of the March

Indestructible. Trample.
Kos,Machine God of the March is not a
creature until "Machine Oath Gate" is on the battlefield.
Whenever Kos, Machine God of Good Work does combat damage to a player, that player mills half
their library.
Landfall—Whenever a land enters under
either players control, Kos, Machine God of the
March cannot be blocked this turn.