I have a new pot of stew for you guys to sample.
Ingredients
Multiplying Damage (extra damage is not multiplied, but a weapon's normal damage is).
Eldritch Glaive (the heavy hitter)
Quicken Spell-Like Ability (to allow the combination)
Weapon-Like Spells (touch spells are finessable)
Unorthodox Flurry (dragon comp, makes any weapon a special monk weapon)
Any Monk Alt such as Sidewinder Monk or Wild Monk
(for variants that are wholly separate from the character class—such as the bardic sage or the urban ranger— multiclassing, even into multiple variants of the same class, is probably okay)
Decisive Strike
Any +Full-Attack effect (white raven tactics, contingency[celerity], shadow pounce, battle jump, mantis leap, w/e).
Effect
So Monk 1 & Sidewinder Monk 1 gives you both Furry of Blows & Decisive Strike, the former is for Unorthodox Flurry(eldritch glaive).
A. You use a Swift Action to use Quickened Eldritch Glaive dealing a ton of damage.
B. Using a Full-Round Action you use Decisive Strike with the now formed Glaive dealing x2 damage.
C. You trigger w/e effect you choose (white raven tactics is fine) and Full-Attack with the Glaive, with an additional x2 modifier.
It's the best route to go for a new record on a single Round's worth of EG damage.