I guess I'm not that far into the game. I don't now how to add abilities to weapons yet, and I haven't seen a shop that sells "distillers" yet?
Ability distillers are available in the calm lands after you escape Yuana and the groups punishment.
You also get power distillers speed distillers and a few others.
I always felt underpowered throughout the game BARELY getting by each area. Now that I'm doing the cactaur village quest.. it's a hoot because I am so.. over powered (heck even little Reiku is killing things fast).
Please note TAKE THE TIME TO DO ALL SIDE QUESTS as you go. For example the Miehan road.. think VERY carefully about everything you do. You WILL miss something if you don't listen to the game hints, TRUST ME.
Cyb
The guy who has most of the summons save two.