Xæl, Hellfire Archivist

This spell costs {1} less to cast for each creature card
in all graveyards.

Xæl's toughness is equal to the number of creature cards in all graveyards.

Whenever Xæl enters the battlefield or attacks,
exile up to one creature card from a graveyard. Create a token that's a copy of it, except it's a black Zombie in addition to its other types.