I honestly think Silence is stronger than Render Silent by a lot.

It may be cheaper, but with Render Silent you can counter a instant your opponent would cast, while silence could be interrupted by that instant. I think Render Silent is a better trap for the control, although I understand it comes with a price (2 U more precisely)

You have way too many 1 ofs creature wise. I understand this isnt a heavy creature deck, but still I would get more then one of a few like Archaeomancer , Remove Angelic Skirmisher , does not belong. Lavinia of the Tenth is strictly good for only Azorius, but sometimes she isnt good for that even, this deck does not do well to have her in.

How about:- 1x Angelic Skirmisher - 1x Lavinia of the Tenth + 2x AEtherling