[New game mode] Pillager
Played on either Twisted Treeline or Summoner's Rift, Pillager will be a game-mode where only the doran items, trinkets, boots, and consumables are available to purchase from the start. From this point on, players will have to search for item boxes on the field and destroy them. For each destroyed item box, the person who last-hits it gets a random item for free, while the rest are able to purchase the item at a discount depending on how many assists/deaths you have. Every five minutes, the shop will also gain a new item to be purchased.
Those who die to an enemy champion will have a random item stolen from them by the person who got the kill. A person who recently "pillaged" can't do so again for 10 minutes either. The goal remains the same overall: Kill the enemy nexus.
For kicks, toss in old items that no longer are available in-game too. I know a few people who would be delighted to get innervating locket again