Nah, 4 ST is plenty. If you oversaturate your deck with item destruction, you are effectively playing 6 cards short versus non-item reliant heroes. And you still have a chance of drawing them, when you could have drawn something a lot better.
Nightshadeis definitely a great ally, but he gets laughed at by mages. If you're having trouble with them, sub out the Shades and call in Puwen
for bulk + strength. Adding Aldon
is a great idea, by the way. You will find a turn 3 drop saves your hero more times than you can count from Kris-Puwen-Jasmine-Aldon.
Bookmarks