Chaos, Rider Aflame

When Chaos, Rider Aflame enters the battlefield,
exile all other creatures and place them
underneath her. Whenever Chaos, Rider Aflame attacks, each player gains control of a creature
exiled this way of your choice. These creatures
enter tapped.
When Chaos, Rider Aflame leaves the battlefield,
if there are still creatures left in exile underneath
her, return them to the graveyard of their
owners.