Seraph's Embrace VS Luden's Echo
Seraph's Embrace VS Luden's Echo:
A lot of players choose one or the other. My question is "why not both?" LE seems to play off of SE well. It gives LE +18 AP bringing it to a complete 108 AP. (that's before Deathcap) Especially if you have the Transcendence rune for that extra CDR AP. Top it off with Rod of Ages then Rabadons's.
Here's my math:
Seraph's Embrace 50 AP +42 (Awe passive from SE) 1400 Mana 20 CDR
Luden's Echo 90 AP +18 (Awe passive from SE) 600 Mana 20C CDR (potentially plus 20 AP with Transcendence)
Rod of Ages 100 AP +12 (Awe passive from SE) 500 Health 400 Mana