We Will Not be Forgotten

Return any number of creatures from your graveyard to the battlefield, they gain haste and loss all other abilities. At the beginning of your next end step, exile all creatures returned to the battlefield with We Will Not be Forgotten.
Across these fields lay all who fell to your tyranny and madness; souls robbed of their purpose and cursed to remain here. Yet I hear their anguish and they shall be heard again: We Will Not be Forgotten