New summoner spell idea

i know riot is open to the idea of new summoner spells, but they have to be on a similar power level to current ones. here is my basic idea

Reach: Your next 2 autos within the next 4 seconds have an range extended 150 units (melee champions only). Cooldown 210

obviously this could be devastating to balance shutters at thoughts of darius and nasus but, this could be a very interesting mechanic to have and at the very least, is worth experimenting with