Archmagi Sup. Salim'Rotner

Deathtouch, Ward - Sacrifice a creature.
Salim'Roner's toughness is equal to the number
of creatures in all graveyards & in exile.
{4}{u}{b}{g}: Transform Archmagi Supreme Salim'Roner, Activate this ability only if he is in exile.
(Salim'Rotner, The Savior.)