Lazav, Keeper of Secrets

-1: Create a 2/4 Informant with, When a creature or plansewalker you don't control is destroyed, put a loyalty counter on Lazav.
-X: Destroy all creatures and plansewalkers your opponents control with concerted mana cost of X.
-10: Gain an emblem with, At the end of each opponents turn, if its not an extra turn, they take an extra turn, take control of that players turn.