Talk:Janna/@comment-5557556-20141222212409/@comment-25904283-20150106022524

Most high level/pros using Flat runes for support. The only place where scaling one might be better is scaling MR glyph (but only if enemy bot lane don't have much magic damage). Vs something like Karma or Lulu, Flat MR glyph is still better.

Janna is a defensive support, with not so great poke, mediocre AP scaling and low AA range. Therefore, I use flat armor marks, flat health seals and 6x flat, 3x scaling MR glyphs and flat armor quints. In the special case that your ADC has very weak early game (Twitch, Vayne), you can use AP quints for a bit better poke and shield.