Talk:SE.RA.PH/@comment-5623168-20170502153433/@comment-76.31.234.190-20170503140757

Dpends upon how many you think you would be using at once, max. If you think you might be putting Rin/Rani CEs on all five of your Servants, that's 100% bonus, so if you only rolled seven of them, then you'd be better off not LBing one, since that would drop your maximum to 90% (50% + 20% + 20%). If however, you don't ever see yourself using more than three at a time (60%), then LBing one even makes sense if you only rolled six of them.

Basically, the only hard cutoffs I can think of where I'd say you should definitely LB the enemy bonus CEs is making one at eight and two at ten, since the mechanics of the enemy CEs seems to make having any bonus over 100% useless. For the Hakuno (Chips) CEs, it would technically be one at eight and two at eleven for the same reason, but since you're almost certainly *not* going to be using only Hakuno CEs unless you got really unlucky in the gacha, I'd say to LB one as soon as you get to six. That would give you a +3 bonus and three spots (plus support) to use enemy CEs.