Nocturne W change (dmg reduction instead of att spd)
Change the bonus you get when shielding a spell to % dmg reduction instead of att spd. Or some form or defensive stat. Blocking 1 ability is great in 1v1 but in teamfight its pretty useless so you end up dieing seconds later after ulting, since noc has no natural tankiness for a all in champ.
blocking
knockup while going in for a gank, making it a more effective one w/ the bonus attack speed.
And since your Q+E help chase down targets bursting is really only second priority when you can stick to them like glue.