Yawgmoth Father of Machines

I got a request to make a Yawgmoth card so here he is. All of his abilities are supposed to reference cards referencing him. His tomb, his bargain, and his will. I wanted to make his emblem exile your stuff like will, but the text got too cramped for my taste. So you can ult him and get infinite mana from a lotus petal, dark ritual, etc. to power an giant tendrils of corruption with less input for the storm count. Not sure if that is totally OP or just reasonably OP.

Credit to  Blastermind for finding this picture for me. Credit to The Duelist Magazine for actually making the picture.