[LDiCesare]

10+ jarls? It will take a lot of time to gather these. Which other early age nation has blessed units that will withstand such a 10-jarl attack? Mictlan jag warriors get frozen after 2 rounds of melee and salughtered, but they can hardly be called a weak sacred unit.
By the time Niefelheim can field 10 sacreds, T'ien Chi will have researched at least one school to level 3, and will be able to field some mage artillery to counter the giants, or have flaming arrows.