Can mages get an item like this?

An item that gives bonus movement speed that works like except when you use abilities.

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Before any of you begin to say how this would make certain champions strong such as the item can be adjusted similarly to how is for example, is adjusted for every situation in terms of how much an area of enemies or a single target is slowed and with this item idea it could work the similar way, where consistant use of abilities wouldn't give the same amount of movement speed or something like that.

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It's just that certain champions have such low base movement speed and just an overall kit with no mobility that it's a joke to be useful...

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Take ivern for example who has one of the lowest base movement speed in the game just sitting at around 325.

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Meanwhile certain champions who are too mobile get to be even more mobile thanks to items that give % bonus movement speed or just .

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I get that certain champions have the design of an un-mobile kit but for god's sake c'mon riot you have to admit that the itemazation for AD champions is seriously too good for every situation.

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You could atleast add one item that would help someone like (330) or (340) who have get away from a (340) (345) who have around 430-450 movement speed or even higher with items or in case with her W giving her 90% movement speed at max rank for 1.25 second.