Board Thread:Questions and Answers/@comment-180.229.237.35-20150821152918/@comment-556400-20150821164107

Each summon has its uses. Bahamut is strong, but costs 100 mana, so if you only need to heal, or only need ATK buff, it's a waste to use that extra mana just to get Bahamut. Repairing can only be done on a destroyed base, so it's different from Lorelei.