Thread has been cleaned up. OP asked a simple question, answer it plainly or don't post.
I disagree. He starts the thread asking about mechanics of resummoning dead minions and why they aren't still silenced and then backpedals to say that he now understands he shouldn't use silence on a voidlord because it will resummon them anyway? Like what. This question is anything but simple. It's convoluted to the point where silencing the voidlord to get damage through, as stated by the op isn't even the answer and has now boiled down to Mr Shmoove complaining about cube as well. This entire thread is nonsense and I don't think anyone knows what op is going on about.
Silence is a situational tool, that is all there is to it. The takeaway op say he has is that silencing voidlord is incorrect but he is wrong because sometimes it is correct and saving silence for cube is pointless because darkpact is a card. So what was the point other than op doesn't know how to play hearthstone and continues to not know how to play hearthstone?
I feel like thats counter productive then to even silence it...obviously silence it regardless so you can attack but whats the point if they will just resummon them anyways??? Why have silence if it doesn't silence.
If it doesn't silence? WTF are you on about? Cube destroys the minion and summons two copies of it. Whenever a minion dies it loses any an all effects and when it is summoned again it is a new copy. That is how has always worked with everything from ressurect and n'zoth to guldan. It doesn't work like Faceless Manipulator because Cube isn't copying the minion itself but it's summoning new ones.
As for the reason to run silence, that is to shut down the voidlord's taunt and deathrattle and that is exactly what it does. It gives you a turn to punch the hero and ignore the voidlord.