Wishlist/General Summon Suggestions

Banner Hero Yes/No

Yes, Seira is a solid counter to Daisy (the best tank) in colo, she's got a fair amount of utility in that context, not extremely high priority if you're brand new, but useful enough that you'll probably want her

How to use the wishlist:

To summon on the wishlist you need to have 5 heros or weapons selected, and one of the 5 will be randomly picked among those 5, generally speaking you want to remove a hero/weapon from your wishlist as soon as you pull it and replace it with a different one (Duplicate heros are not at all a useful thing to summon, and duplicate weapons are not ideal, although they have more utility than duplicate heros)

Note that when you start the game, there's a "start dash" banner which is available for a while, Eunha and Kamael (from the wishlist suggestion below) are available on this special summon list, and if you pull them from the start dash banner (which is basically like a pre-set wishlist, but with bonus rewards) you obviously don't need to pull them from the wishlist as well.

Exclusive Weapons For Heros

Note that some heros need their exclusive weapons to be useful at all, and some heros just would prefer it for a power increase, also at least one hero (idol eva) doesn't unlock the most valuable portion of her kit until she's been myth evolved (and you've activated her latent awakening that enhances her support ability)

You'll typically get a hero and then frequently want to spend some of your pulls on the weapon wishlist for heros you have, who are missing them (Typically this means your weapon pulls will lag behind your hero pulls) -- However since some weapons will drop randomly (heros never drop randomly) you'll occasionally have the weapon first.

To clarify who needs their exweapon, I've added a symbol after the hero's name:
  • ! This hero is absolutely not useable without their exweapon, they always want to be using it in any/all circumstances
  • * This hero will usually prefer their exweapon (typically in same-element teams) but can be used with other weapons sometimes optimally
  • (No symbol) This hero will use their exweapon whenever possible, it's the best use case for them in all teams they'd be useful in, but if you don't have it, you can make due with another weapon, but it will always be sub-optimal
  • There's no heros who prefer not to have their own ex weapon.

Wishlist Suggestions:

This is my personal suggestion list, everyone will have slightly different opinions, and I'll try to update this as things change
Note that while this is a kind of "generally useful" list, you can narrow down your preferred options if we know what kind of heros/weapons you already have, and what you prefer to focus on (Colo? Arena? Story? etc....)

Mix of use heros that might be good to get for various reasons:

GENERAL USE (Usable on multiple teams, and in more than one type of content)
  • Tier 1G: Eunha*/Beth/Daisy/Erinia/Dabin/Idol Eva!
    • Idol Eva is Free for new players from basic training mission later, don't summon if you can get her for free
    • Eunha cooperates with most types of teams and is strong in all content except arena
    • Beth is also strong in all content, but she more strongly leans towards a dark/melee team, so she doesn't cooperate with as many types of heros, she's stronger than Eunha in arena
    • Daisy and Erinia are the two tanks of the set, generally speaking you only usually need one tank at a time, so I'd start with one or the other. Erinia's stronger in PvP content (Arena and Colo) Daisy's stronger in PvE, and stronger in Colo if the enemy doesn't have Seria (Daisy and Erinia are actually both fairly strong in Arena)
    • Dabin is a *very* strong crit hero, she's good at colo and good at raid
    • Idol Eva has one of the strongest buff skills in the game, and provides some adequete healing, she's stronger in a basic team
  • Tier 2G: Gabrielle/Kamael*/Kahlor
    • Tinia and Kamael can often be used as "secondary" raid heros, someone to fill in when a hero is missing or unavailable, due to their debuffs, also both can apply their debuffs with off-element weapons, Kamael is primarily used as a raid hero and in dungeon kingdom arena
    • Gabrielle is a decently strong crit hero and has some attack bonuses that can be used on multiple teams, she's much stronger in a light team, she's primarily used in raid and dungeon kingdom arena (note while she technically heals, she's at best a 3rd tier healer, her main job is damage buffing)
    • Kahlor is part of the melee fire raid team (Which is secondary, but useful on fever days against earth bosses) and is a strong counter-play to Seria in colo

"SOMETIMES" USE (Usable in multiple places, but not often):
  • Tier 3G: J/Scintilla!/Hakura!
    • Hakura is for the melee light raid team (rarely useful in fever, high investment) and is a good arena hero
    • J is mostly an arena hero, however for some specific cases she's useful in DKA and tetis heros
    • Scintilla is key for raid (on the melee fire raid team, which is a secondary raid team for earth boss fever days), not terrible in arena

KEY HERO FOR ONE SPECIFIC MODE (Mostly raid, some key heros are "general" heros, those are not included here)
  • Tier 1K: Randi/Lucy!/Orca!/Wakamo!/Yun!/Lacrima!/Siera!
    • Seria is colo specific

  • Tier 2K: 1st Corp Commander!/Callie/Arabelle!
    • Arabelle is colo specific, and really only useful as a party lead with high stats, it's her weapon skill that makes her useful in colo
    • 1st corp commander can be used as an alternate in colo, but mostly she's just for raid (Note that the collab hero "Klen" is party of the dark ranged raid team, and if you don't have him you cannot obtain him at this point)

SPECIFIC HEROS THAT PAIR WELL WITH THE ABOVE IN SPECIFIC CIRCUMSTANCES:
  • Tier 1S: (Useful in a few cases): Noel/Chocolate Collector Ameris*/Miya*/Yuna/Noel/Clara/Andras*/Beach Rie/Tinia* See Kamael note above
  • Tier 2S: (Each Useful in one specific case): Ruri(With her own exweapon or Hakura's)/Vishuvac! (With gauntlet)!/Ameris (non chocolate)/Dohwa!/Nari/WinLing!/Plague Doctor!/Lillith!/Saya
  • Tier 3?S: Mikke!/Kanna! -- Note that the current optimal team for Mikke/Kanna in raid uses Alecia who is no longer available, if you don't have her and her weapon you'll use White Day Girgas in the basic melee raid team, which is not presently useful in raid

Also--Somtimes-Useful rare heros: Knight (with Libera-bow)!, Sometimes Karina! (although not often)

Other References

To get a sense of what teams to put together with your teams, and how teams cooperate, check out:
Building your teams for new players

For an understanding of how account-wide bonuses accumulate see:
Book Bonuses (Item/Hero Collection)