Sivir and Nocturne cannot Spell shield an ally Bard ultimate

Only works if they are on the Bard's team. I guess because it's not an enemy ability, but considering how hard the effect is on allies you'd think you'd be able to block it. For example, if the entire enemy team is chasing you, you can have Bard fire his ultimate, run to it so everyone gets hit, but then spell shield it so you can continue running.

Just a little thought that could in theory make Bard better.