This build is a magic only build that focuses on Sigil Magic and Runic Magic in between. It is a generalist build, being able to deal any type of damage effectively.
Full Build Details
Skills can easily be swapped out to prepare for specific boss fights. Sigil of Wind can replace Fire/Ice, and for a mostly Frost fight, Mana Ward and Push Kick can be substituted for more Frost spells.
For Rune Sage, [Runic Prefix] is taken in order to get Decay damage on the Runic Claymore, as there is no form of Decay magic aside from the Blood Bullet.
For Philosopher, [Sigil of Ice] is taken over Fire Affinity, as without it, Frost damage will be severely lacking.
Lastly, for Cabal Hermit, [Sigil of Wind] is vital as it provides extreme amounts of Lightning damage and Impact with Conjure and Spark.