The Lich's Tome

Indestructible, Can't be countered, enters the battlefield tapped
{b}{b}{b}{t}: Create a non-legendary copy of target creature. If the target is legendary, this ability
costs {b}{b}{b} more to activate.
At the beginning of your end step, if you control
this and The Lich's Tomb, The Lich's Army, and
The Lich's Infamy, exile all of them and meld
them into The Lich Eternal, Death Made
Manifest