Talk:Seraph's Embrace/@comment-5911532-20130224091813

That Janna example is horrid. Not sure I know many Jannas who build a DFG and a Mejai's. Fully stacked RoA is 650 mana and 80 AP, Janna's natural mana is 302 + 64n, assuming she has a fully stacked RoA, shard of true ice, four points in the offensive mastery "Blast", and no other AP items the cut off'd be: 0.03(64n + 1952) = 0.30(n + 245). Simplify that down so that you can see that with those items the Deathcap will provide more AP if you are level 9 or below.

Consider how many Jannas can finish a Deathcap before level 9 and the utility provided by Seraph's shield, mana pool, mana regen, and its synergy with other support items like BV, Crucible/Grail, and if you really want to go nuts and buy Frozen Heart if you're not confident enough to fully utilise the active effect of Randuin's Omen.