It is absolutely needed to enter Destard in order to get Dragon Eggs for Sandy in Trinsic. The Dragons are horrible enemies, spells like "Kill" are needed to survive this dungeon.
Right from the start, move east to access the ladder 1 to level two in the middle of the big hall. On level two moves west and right down the hole 2 to level three. On level three, take the ladder marked 3 that is in the west to get down to level four.
Be warned, many dragons are here. Make your way to the breeding chamber 4 to get the eggs and loot. Then proceed, if possible, to the treasure chamber at 5 to get more loot.