Dominions 3: The Awakening/Magic/Global Enchantments

The most powerful rituals affect large portions of the world. These rituals are known as global enchantments. Once a global enchantment is cast it will continue to affect the world each game turn until someone dispels it OR the caster dies OR the total number of globals in effect exceeds 5. When that happens, the global with the weakest number of excess gems invested is automatically dispelled (can possibly be the one currently being cast).

Global enchantments are cast from a Laboratory directly from the strategic map by choosing the Cast Ritual Spell action. They cost great amounts of gems and require strong skill in magic. For each global enchantment, there is a minimum gem requirement. If more gems are used, it's harder to dispel the global enchantment or get it bumped from the list if/when the total # of globals exceeds 5.

The hotkey for seeing which globals are currently active as well as the casting nation is F6.

The following is a list of all Globals available in Dom3. As we can see, Mother Oak, Gift of Health or Burden of Time are likely to be cast early in the game, as they are only level 5 spells.