Nahiri, the Lithomancer

[+2]: Put a 1/1 white Kor Soldier creature token onto the battlefield. You may attach an Equipment you control to it. [-2]: You may put an Equipment card from your hand or graveyard onto the battlefield. [-10]: Put a colorless Equipment artifact token named Stoneforged Blade onto the battlefield. It has indestructible, "Equipped creature gets +5/+5 and has double strike," and equip 0. Nahiri, the Lithomancer can be your commander.