Talk:Ice Fortress Oulu/@comment-199.241.147.35-20150616181034/@comment-26472817-20150618185730

Unless you dont have any other good mitgators for trials, it's not worth it. The 7* only hits once with his sbb and their boosts wouldn't stack, and on top of that you will get only one Golem Core, so I think you should sell the extra guardian Oulu.

Also, you are gonna need those achievement points to claim the legend stone to evolve it to 7* if you dont have any extra legend stones like me :(