@Xypherous: Why are tower-saving mechanics not looked into? Why must it always be tower destruction?
With all the means of boosting a player's ability to kill the already-bad turrets in this game, I don't understand why there isn't an item or something of the sort that lets you temporarily protect a turret from damage (outside of Janna or Bard). Sure, the Fortify Summoner Spell was bad because it made EVERY turret invulnerable to damage, but wouldn't an item that only protects the nearest turret be more acceptable?
If this very line of thinking is wrong, why is that?

