Thraden Forgotten Tutor

Thraden Forgotten Tutor's power is equal to the number of Planeswalkers and Wizards in all graveyards and has the abilities of all wizards in all graveyards.
{u}{b}{1}, {t}: Destroy target planeswalker or wizard creature.
He was once considered the greatest teacher of the multiverse; death has a funny way of changing people's priorities.