well, you see for people with team strong enough to win all or most of urgent missions, unit cost is lower, to me Echidna comes with 29 unit points so she is not a very nice option. for spica, even that she is a platinum unit but her hp is lower than Daniela's but for higher speed and damage that can be considered. how about unit in premium summon. they says "increased summon rate" so i can get better chance to own these 5 units, right? i've save up 68 sacred crystals, is it worth consuming for these or wait for better one, also if doing gacha, is it better to roll a lot once or what, since i have only 10 slot left and have to discharged after filling up.