Diplomacy question

[Doo]

The Dispel spell will try to remove one of the world enchantments at random.

If there are five world enchantments you have a 20% chance of the Dispel spell trying to knock off the enchantment you want removed. Not the best odds, especially if your dumping in upwards of 70 astral gems.

Thus, as Edi says, its best to try to replace the enchantment with your own. With some, such as Burden of Time, this may not be a better.