Kriegsende, Lone Arbiter

+1: Put a manifestation counter on up to one target artifact you control. That artifact becomes a 3/3 Golem Soldier creature.
-1: Create two colorless Equipment artifact tokens named Long Sword with “Equipped creature gets +2/+0" and equip {1}.
-7: Return all artifact cards from your graveyard to the battlefield with manifestation counters on them. They become 3/3 Golem Soldier creatures.