Well, I feel stupid...

HAHAHAHAHAHAHAHAHAHAHA My brother did the same thing

Hopefully you have a 40% or 20% tempest trails unit, so you can get orb rewards quickly. I have B!Ike, B!Lyn, and B!Roy

I did the same exact thing. I am weak so I tried one last time for Nowi but didn't get anything good. But if you take a good look at the calendar, you'll see that there are plenty of orbs coming for us soon, so we should have nothing to worry about. You also have to remember that while the Legendary banner is nice and those units are good, it's not necessary to have them all. So unless you are one of those people that wanted to die cause they couldn't get Cordelia (Or in my case, Camilla) then it doesn't matter too much. Everyone else will be back at some point and they aren't detrimental to have anyway, unlike the Halloween units who may never come back, or at least not for a long time. Personally, I only want Camilla because we don't know if she'll​ ever be back and she'll complete my flier emblem, and Genny for Wrathful staff. While I'd also like Hector, I don't need him because 1) Amelia is coming back shortly after him and 2) He'll be back eventually, since he's not a limited time unit. Overall, I don't think you have anything to worry about and you could even continue summoning on Halloween without regrets. As long as you keep your priorities in check and only Summon on the legendary banner for units you really want or need, then you're fine.

Hopefully we are getting plenty of orbs during the upcoming weeks

* 40 from tempest trials
* 30 from new chapters
* 20ish from daily bonus

Some more from beginning of decembre, some more probably from the bound hero and great hero battles ...

Trying saving them though.
20 orbs is not enough to plan and get anything good during the legendary banner

I'm also weak,but i'm saving starting today.

You can save 120+ orbs from now till the end of legendary banner.

Did the same thing over the weekend....got two units to 4* merge though....

I feel you. I'm quite spent when I saw the Farfeteched Heroes. But we'll soon quickly recover and have enough orbs thanks to the upcoming events/maps.