I'm levelling a bard reincarnation after (supposedly mistaken) anniversary event that gave out reinc slots on p2p server and here's what I'm using at the moment (level 36):
http://www.allodswiki.ru/calc/#!9!222.2.…MUXUN!choilnd/A
I went full aoe, stacked as much bloodlust as I can on every slot (got like 60-something bloodlust) and I can easily take 8 or more mobs of my level at the same time. It's blazing fast to grind and I get enough marks of fate from it for nearly all quests.
Grinding on bard is overpowered.
Edit: Also, there's some serious mistakes in ruby descriptions for this class in English version (when confronted with RU calculator), for example "Sharp Chord" really increases damage of Dissonance, Disharmony and Power Chord, not critical strike chance. Or "Resonance Point" has very important part of it's description completely missing in English version: "All of bard's Chords will take Resonance point target as priority."