The Fall of Jezrien

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

—I. Attach target Equipment you control to target creature you control with the greatest power. Put a flying and a vigilance counter on it.
—II. Put an indestructible counter on target creature from step I. Its power becomes 1 and it gains defender.
—III. Exile target creature from step I. It deals damage equal to its toughness to each other legendary creature on the battlefield.