Mara, Daughter of Madness

When Mara, Daughter of Madness enters the Battlefield sacrifice all other Human and Knight creatures you control, then deal damage to your Opponent equal to the combined Power of those creatures.
{u/b}{u/b}, {t}, Return target 'Belnon, Lord of the Wandering', or 'Dugal, Lord of the Wandering' from your Graveyard to the Battlefield tapped.
"You see, my love? You left me to rot. Now I give you the same." - Mara, Daughter of Madness.