Talk:Alistar/@comment-26040142-20150211014907/@comment-9008617-20150220024320

Blackshield only absorbs magic damage which makes it strong because AD can't break it so the CC invulnerability remains intact.

But since most Morganas only put a point into Blackshield until lvl 8, that means it only absorbs somewhere between 70 and 100 magic dmg which is less than the dmg of Alistar's W, Q, and passive magic dmg.