Legendary Hero Summoning Event

Attack/Def bond only works when you attack no? I prefer to use Luke's as a physical defensive unit so his a) skill is quite good for his main role, he doesn't really need to be changed.

Depending on what you lack on heroes, you could easily go full round of summoning. There's like at least 2 good heroes per color, which is cool.

There is a strong rumor that fjorm will be in another banner by the end of december, so if you really want her, wait until that one.

I understand how you feel but you have to understand that this is pure RNG and blue is one of those "fuck you" colors. This banner is only good if you're pulling for a specific color... not a hero. Otherwise you can spend 2 grand and still end up with no Fjorm. That's how RNG works and unfortunately it's more likely than you think... I recommend just using a simulator and seeing for yourself. If you go for Fjorm fodder you might as well just be shooting yourself in the foot. Seriously its all just RNG you very well could just get her off your free summon... Who the fuck knows? But if you're that desperate for a skill that's pretty meh then go ahead and waste all your orbs but just remember on each stone that your odds generally speaking suck for this kind of banner. To quote the big reddit post: "All I want to point out is that if you tunnel vision on one specific hero or decide that now is the time to whale for a +10, don't be surprised if it actually takes more orbs than usual to get him/her. 8% sounds spectacular, but it's really .66% for each specific hero (compared to .75% and 1% for regular banners). Instead, having a mindset that you just want to get some really good heroes and not tunneling too hard will most likely (you never know when it comes to gacha games) result in better summons and less salt."
TL;DR: Don't. End of story.
Summon sim: https://feh-stuff.github.io/