Little Trick with Deadman's Plate
gives momentum which discharges and increases the damage of your next auto attack. Every step you take gives you charges so taking a step between each basic attack will increase your damage output. Granted it won't be a lot but it will add 5 or so damage to each auto if you do this. Instead of standing still while attacking tower or dragon try taking a step with each attack. And if someone, for some inexplicable reason, tries to duel you standing still doing this will give you a little edge.
built into a defensive item. If you're playing a sustain/pen mage who already relies on a
combo for damage, then a permanent +60 MS along with health and armor is extremely effective in-game (much more than on paper).

as a last item.