The Ritual Flame is a special building released for the Guild Expeditions. It can be obtained as a relic or as one of the Guild Expeditions encounter reward.
It gives a stacking 8% boost to your army's defense rating, when you are attacked. It has the same defense bonus as 2 Watchfires and also requires the same amount of space.
It is a result of InnoGames' attempt to make rewards from Guild Expeditions unique, thus replacing Watchfire as a GE reward.
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