Masteron is not injectible proviron. And it doesnt work like that. Also when you`re running proviron its a dumb thing to add testo! Proviron doesnt shut you down in any way! Moreover it is precribed drug to enhance your erectile function!
Masteron provides great morning wood and yes you can add test prop to masteron if you like but definitely not to help you with erections
BTW when you come off the test your libido goes down and this is a good time for proviron.