@TheoryCraft : Small(or Big) change for BansheeV. What if ...
you could have diff. kind of shield there. -> my language is not perfect , but i hope you gonna understand me.
We all know , how current Banshee workin.
->Buy Item
-> You gettin spell shield
-> Someone using spell on you
-> spell blocked
TheoryCraft Banshee
*Buy Item
*You gettin spell shield but as "1xSTACK'
What I mean by that.
*You don't have spell shield all the time
*Use / Activate 1x Stack
*Shield PoP up . Like Sivir One or Nocturne one for " XXX" seconds.
*If spell hits you , or XXX seconds gone 1x STACK going on CD
TLDR : TheoryCrft : What if new BV had Spell Shield as Active or Let's Create new item with Spell Shield Stack.
? except better because it will block the damage