Shield Bash "While shielded, gain 1 - 10 bonus Armor and Magic Resist. Whenever you gain a new shield, your next basic attack against a champion deals 4 - 22 (+1.5% Bonus Health) (+8.5% New Shield Amount) bonus adaptive damage. You have up to 2s after the shield expires to use this effect."
^ This effect has a 5 second cool down
And now the rune suits its intended users 
instead of 
RIVENS BASIC CAN GO 1000 DMG WITHOUT TRINITY
I like this but I think it might be better as part of a new hero's kit. and like they could knock someone back while bashing. like graves shotty
they could bash with an allies shield too 
and work a bit like how yasuo works with knockups
The rune is literally garbage, it is extremely over hyped right now. It only looks so good because the other runes in that tier are literally worthless. (though demolish is okay with the buff to it.)
It was only good back when having any shield on let you keep procing it over and over, and when it did that it was only "okay". I could play any ADC get BT and overheal and I was constantly adding an extra like 50 damage to all my autos.
