User blog comment:Lesanthosxia/Grugnir, Guardian of Immortality/@comment-78.8.4.100-20120129233432/@comment-2066615-20120202172942

I reduced the scaling to 0.5, so maximum shouldn't exceed 300 shield strength. Also, not-self-targetable.

The ult wise... if enemy has a Karthus, or major AoE and your team took the entire damage, you'll die instantly, so the revive is the needed part.