Domain Mastery

At 1st level, when an ecclesitheurge chooses his cleric domains, he designates one as his primary domain and the other as his secondary domain. An ecclesitheurge can use his non-domain spell slots to prepare spells from his primary domain's spell list. Each day when he prepares spells, an ecclesitheurge can select a different domain granted by his deity to gain access to that domain's spell list instead of his secondary domain spell list. He does not lose access to his actual secondary domain's granted powers or gain access to the other domain's granted powers.