Evigishki Soul Ogre

Ritual Summon 8 - Gishki (If this card is in your
deck, your deck can include any number of Ritual
sorcery cards with the same name. This spell can only
be cast with a Gishki Ritual sorcery spell.)
{1}{u/b}{u/b}, Discard a Gishki creature card: Target
nonland permanent's owner shuffles it into their library. Activate this ability only once per turn.