Hey, yes, if you use IEWA, but you have to have enchanted it only to +3, then you have random chance for +1/+2 enchant.
No, safe enchant is +4 for everything (expect event items, Baium talisman etc.) Weapon +3 + IEWA = +4 or +5, depends on your luck. If you use it on +4, it can break.
Items D-B grades got quite some good enchant rate. Is quite of often to OE items, i'm really unlucky with %s and even I managed to make +10 duals C and +10 dagger B in like...few attempts. Not working for A grade tho as A grade items got a lower enchant rate cause the power they gain with each enchant is huge as heck.
Yeah, after this thread I gave up on buying themis, and tried to enchant my Staff C and B. Got my B +9, C broke on +7. Went to my BD, had 2 dual C on my bag, one broke on +5 and other went to +10, spent less than 30kk and now I have 2 weapons ++. If I knew, would have spinned all craft the could give "exchange C weapon", will try to get a Staff C +15 soon
Well for PVE only, you can stick with B, cause A grade require lots of adena to put 2 runes. But dmg wise a Themis +5 should be BY FAR superior to B +10 or even +15...not sure for m.atk as it works on 4x basic and not 2x but still lot of m.atk there.