NEW ITEM: Hextech Inverter - Invert EVERYTHING
DISCLAIMER: I do NOT think this should be a summoner's rift item. Instead I think it could have a place in one of the rotating game modes as a special item there.
What do I mean by invert everything? When you activate this item, for 6 seconds, the colors of your champion and all of their abilities are completely inverted. White becomes black, red becomes cyan, purple/green etc. While in this state, all of your abilities that normally target enemies will now target allies and all abilities that normally target enemies will now target allies. Additionally, abilities that do damage now heal for the same amount, while abilities that heal or shield, now do adaptive damage for the same amount.
To give a concrete example, let's look at what would happen if a Soraka and a Karthus both bought this item and activated it. Soraka's heal becomes a point and click damage ability. Her Q slow and E silence are now healing skillshots that she can cast on allies. And her ult does instant damage to everyone on the enemy team (basically a karthus ult). In contrast, if Karthus bought this item and activated it, his Q becomes an AoE skillshot heal, his E remains a slow, and his W is another AoE healing ability, similar to Sona's W. When he ults he now heals everyone on his team. So we see that it's almost like Karthus becomes a Soraka for 6 seconds and Soraka becomes a Karthus for 6 seconds!
I think it would be a really whacky item that could be a lot of fun in a rotating game mode. What do you think? Share your thoughts below!