Here you go guys: http://emps-world.net/wiki/Frost_dragon
seriously ?? 166 cb and the drops are like blue dragons ....
something need to be changed
Visages drop twice as often and the bones will be at least twice as expensive as dragon bones. Noted Rune bars and Onyx Bolt tips will also accumulate over time, and will sell for quite a lot. The drops are much better than the drops of Black Dragons, which have combat level of 200+.
@Mary, I assume that the ''Uncut dragonstone 18-53 Common'' is a mistake 
We've changed some things. They are all summed up in a list below:
- Jellies removed from Duradel's slayer task list.
Fml, jellies were fun 
Said no one ever 
They were one of the very few Duradel tasks that didn't require any supplies. They were free XP. Now there is literally no reason to choose Duradel over Vannaka IMO.
Yeah copy mistake from the fire runes line
About the duradel tasks: It's just what you prefer, fast XP for little cost of resources, or big XP for some resources + pretty damn good loots (if you're lucky and don't get black drags).
The frostdragon drops are arguably better than those of blue or red dragons, although being similar in strength, as Someone12116 said. They are in wildy so they should be a bit more rewarding without giving away too much resources. Just the bones would be worth fighting them tbh, and rune bars + onyx bolts, coin stacks and a few dragon items would quickly stack up.