Hero's Downfall

Destroy target creature of planeswalker.
Hazoret's spear, for the first time in the history of Amonkhet, failed to grant the afterlife. But as the sun set itself between two horns rising above Gideon, the dreaded God Pharoah grasped the spear and stabbed it clean through the heart of the leader of the Gatewatch.
Luxa River began to spill blood and the Hour of Devastation began.