Phyrexian Scriptures (266) - March of the Machine Commander

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I - Put a +1/+1 counter on up to one target creature. That creature becomes an artifact in addition to its other types.

II - Destroy all nonartifact creatures.

III - Exile all cards from all opponents' graveyards.