Yep, Ottos were (tacitly) in the war.
But my Thirty Years War is going to be epic.
Protestants: PLC (my fault we're Protestant), Sweden, Bohemia (both 200 relation allies), Saxony, Brandenburg, Hansa, and Scotland and some HRE minors.
Versus
Catholics: England, France, Austria, Hungary, Spain, and some HRE minors.
First time I've ever made the Thirty Years War look like it's going to be epic. Mostly since I'd say our collective manpower and economies are equal. Ottomans hate Hungary/Austria more than they hate me, so the entire war may hinge on what side Ottomons choose (Muscovy is useless since I own Moscow, Vladimir, Ryazan and all the other good Russian provinces).