We need this item in summoners rift and I know how to do it easily

Well a lot of arguments twords zed have made me realize that there is 1 item that should be added that would really be helpful . This item has been overdue to the game because it can be so helpful in dealing with CC heavy teams as well as giving some ap so it doesnt leave you starved for damage if you were to grab it as a 3rd item or so. Just make it build out of ++500 gold=3000 gold with the same stats of 50 ap+50 mr+ 50 Armor with the active being the disable removal with the 50% movement speed granted for 1 second. This item seems as if it's bound to be added. It would give mages a option to build a little more tanky and give champs that really could use a cleanse without taking . Since rito wants diversity what reason is there for this not to be added?