Eredin, King of the Aen Elle

Vigilance
When Eredin, King of the Aen Elle enters the
battlefield, create X 2/2 blue Wild Hunt Hound
creature tokens and deal X damage to target
player.
{2}{u/b}{u/b}, {t}: Search your library, either for a card
named General Ilmerith or Navigator Caranthir.
Put it onto the battlefield, then shuffle your
library.