Talk:V1.0.0.144/@comment-110.55.16.121-20120804112400/@comment-4708818-20120807085329

Because you won't stack AP at all, so every little bit is needed and sums up well. If the supports shield (if we are taking Janna) is too little to be of use (which is the case lategame), we just have our CCs - and seriously, there are damage dealing champs with equal or even more CC. So it's about 30% healing and shielding, I'd guess.