Your cabal cipher skill is removed when you don't have your relic. It isn't "[disabled]" like other skills/spells. It is just straight up removed from your skill list.
Quote:
Amberdin will teach the following:
XXXX for 7 gold
Midnight cipher for 5 silver
[ 87] [ 5] [ 70] -=3am=- 5 platinum, 2 gold, 2 silver, 6 copper
train midnight cipher
Amberdin says to you 'You can't learn anymore of 'midnight cipher' here.'
[ 91] [ 10] [ 85] -=3am=- 5 platinum, 2 gold, 2 silver, 6 copper
sk
Innate - hide (mastered) sneak (mastered)
Amateur - dagger (superb) flail (superb)
mace (very good) siegecraft (disabled)
sling (not learned) staff (very good)
scrolls (superb) staves (superb)
swim (superb) taslamaran tongue (superb)
uxmaln tongue (mastered) zhensh tongue (mastered)
empire tongue (mastered) aghelian tongue (superb)
sylvan tongue (mastered) firmyrn tongue (superb)
deep tongue (mastered) empire writing (mastered)